{
  "title": "Compound Interest (Profit, Loss and Discount) - Grade 8 ICSE",
  "total_questions": 60,
  "questions": [
    {
      "id": 1,
      "difficulty": "easy",
      "question": "💰 A toy costs ₹1000. It gains 5% compound interest per year. What is the amount after 1 year?",
      "options": { "A": "₹1005", "B": "₹1100", "C": "₹1050", "D": "₹1025" },
      "correct_answer": "C"
    },
    {
      "id": 2,
      "difficulty": "easy",
      "question": "🧸 Ravi invests ₹500 at 10% compound interest for 1 year. What is the amount? 🏦",
      "options": { "A": "₹550", "B": "₹510", "C": "₹600", "D": "₹505" },
      "correct_answer": "A"
    },
    {
      "id": 3,
      "difficulty": "easy",
      "question": "🪙 Find the compound interest on ₹2000 for 1 year at 4% per annum.",
      "options": { "A": "₹2080", "B": "₹280", "C": "₹80", "D": "₹208" },
      "correct_answer": "C"
    },
    {
      "id": 4,
      "difficulty": "easy",
      "question": "📈 Principal = ₹800, Rate = 5%, Time = 1 year. What is the C.I.? 🤔",
      "options": { "A": "₹40", "B": "₹840", "C": "₹820", "D": "₹45" },
      "correct_answer": "A"
    },
    {
      "id": 5,
      "difficulty": "easy",
      "question": "💰 ₹1000 becomes ₹1100 in 1 year at compound interest. What is the rate?",
      "options": { "A": "15%", "B": "20%", "C": "10%", "D": "5%" },
      "correct_answer": "C"
    },
    {
      "id": 6,
      "difficulty": "easy",
      "question": "🎈 Simple interest on ₹500 at 10% for 1 year is ₹50. What is compound interest? 🤓",
      "options": { "A": "₹50", "B": "₹55", "C": "₹60", "D": "₹500" },
      "correct_answer": "A"
    },
    {
      "id": "7",
      "difficulty": "easy",
      "question": "🏹 Principal = ₹600, Amount after 1 year = ₹636. Find the rate of C.I. 🎯",
      "options": { "A": "5%", "B": "10%", "C": "7%", "D": "6%" },
      "correct_answer": "D"
    },
    {
      "id": 8,
      "difficulty": "easy",
      "question": "🪁 If C.I. for 1 year = ₹12 on ₹200, what is the rate? 📊",
      "options": { "A": "8%", "B": "6%", "C": "5%", "D": "4%" },
      "correct_answer": "B"
    },
    {
      "id": 9,
      "difficulty": "easy",
      "question": "🚀 ₹1500 at 8% C.I. for 1 year. Find the amount. 🛸",
      "options": { "A": "₹1620", "B": "₹1610", "C": "₹1518", "D": "₹1580" },
      "correct_answer": "A"
    },
    {
      "id": 10,
      "difficulty": "easy",
      "question": "🐱 C.I. = ₹40, Principal = ₹1000, Time = 1 year. What is the rate? 🐶",
      "options": { "A": "5%", "B": "3%", "C": "2%", "D": "4%" },
      "correct_answer": "D"
    },
    {
      "id": 11,
      "difficulty": "easy",
      "question": "📉 Find amount when P=₹1200, R=5%, T=1 year, compounded yearly. 🧮",
      "options": { "A": "₹1260", "B": "₹1250", "C": "₹1300", "D": "₹1270" },
      "correct_answer": "A"
    },
    {
      "id": 12,
      "difficulty": "easy",
      "question": "🎉 Difference between C.I. and S.I. for 1 year at 10% on ₹500 is? 🎊",
      "options": { "A": "₹5", "B": "₹0", "C": "₹10", "D": "₹50" },
      "correct_answer": "B"
    },
    {
      "id": 13,
      "difficulty": "easy",
      "question": "🍭 A cycle costs ₹4000. If it depreciates 10% compound per year, value after 1 year? 🚲",
      "options": { "A": "₹3600", "B": "₹3500", "C": "₹3800", "D": "₹3900" },
      "correct_answer": "A"
    },
    {
      "id": 14,
      "difficulty": "easy",
      "question": "🏸 ₹2500 at 4% C.I. gives what interest for 1 year? 🏓",
      "options": { "A": "₹250", "B": "₹2600", "C": "₹100", "D": "₹260" },
      "correct_answer": "C"
    },
    {
      "id": 15,
      "difficulty": "easy",
      "question": "🌱 Plant height 20 cm, grows 5% compound monthly. Height after 1 month? 🌿",
      "options": { "A": "21 cm", "B": "20.5 cm", "C": "22 cm", "D": "25 cm" },
      "correct_answer": "A"
    },
    {
      "id": 16,
      "difficulty": "easy",
      "question": "🍕 Pizza price ₹300, increases 8% compound yearly. Price after 1 year? 🍕",
      "options": { "A": "₹324", "B": "₹308", "C": "₹320", "D": "₹330" },
      "correct_answer": "A"
    },
    {
      "id": 17,
      "difficulty": "easy",
      "question": "📚 Book price ₹150, after 1 year at 2% C.I. depreciation, its value? 📖",
      "options": { "A": "₹147", "B": "₹148", "C": "₹145", "D": "₹140" },
      "correct_answer": "A"
    },
    {
      "id": 18,
      "difficulty": "easy",
      "question": "🔋 Battery loses 15% charge compound per hour. 100% now, charge after 1 hour? 🔌",
      "options": { "A": "85%", "B": "90%", "C": "80%", "D": "75%" },
      "correct_answer": "A"
    },
    {
      "id": 19,
      "difficulty": "easy",
      "question": "🧩 C.I. on ₹800 at 12.5% for 1 year is? 🧩",
      "options": { "A": "₹100", "B": "₹900", "C": "₹108", "D": "₹180" },
      "correct_answer": "A"
    },
    {
      "id": 20,
      "difficulty": "easy",
      "question": "🎁 Gift worth ₹2000, gains value 7% C.I. yearly. Value after 1 year? 🎀",
      "options": { "A": "₹2140", "B": "₹2040", "C": "₹2100", "D": "₹214" },
      "correct_answer": "A"
    },
    {
      "id": 21,
      "difficulty": "medium",
      "question": "🏠 A house valued at ₹5,00,000 appreciates 8% compound annually. Value after 2 years? 🏡",
      "options": {
        "A": "₹5,80,000",
        "B": "₹5,83,200",
        "C": "₹5,40,000",
        "D": "₹5,81,600"
      },
      "correct_answer": "B"
    },
    {
      "id": 22,
      "difficulty": "medium",
      "question": "🚗 A car worth ₹3,00,000 depreciates 10% compound yearly. Its value after 2 years? 🚘",
      "options": {
        "A": "₹2,70,000",
        "B": "₹2,43,000",
        "C": "₹2,40,000",
        "D": "₹2,50,000"
      },
      "correct_answer": "B"
    },
    {
      "id": 23,
      "difficulty": "medium",
      "question": "📱 Phone price ₹15,000. It depreciates 12% p.a. compound. Find price after 2 years. 📲",
      "options": {
        "A": "₹11,616",
        "B": "₹12,000",
        "C": "₹11,500",
        "D": "₹11,400"
      },
      "correct_answer": "A"
    },
    {
      "id": 24,
      "difficulty": "medium",
      "question": "💰 Find C.I. on ₹10,000 for 2 years at 5% p.a. compounded annually. 💵",
      "options": { "A": "₹1,000", "B": "₹1,025", "C": "₹1,050", "D": "₹1,100" },
      "correct_answer": "B"
    },
    {
      "id": 25,
      "difficulty": "medium",
      "question": "🍎 Fruit seller's profit grows 15% compound yearly. Profit ₹4000 this year. Next year profit? 🍊",
      "options": { "A": "₹4,600", "B": "₹4,500", "C": "₹4,550", "D": "₹4,700" },
      "correct_answer": "A"
    },
    {
      "id": 26,
      "difficulty": "medium",
      "question": "🧮 Calculate amount for ₹7,200 at 10% p.a. C.I. for 2 years. 🧮",
      "options": { "A": "₹8,712", "B": "₹8,600", "C": "₹8,520", "D": "₹8,640" },
      "correct_answer": "A"
    },
    {
      "id": 27,
      "difficulty": "medium",
      "question": "🎓 Student loan ₹20,000 at 9% C.I. for 2 years. Find amount to repay. 📚",
      "options": {
        "A": "₹23,762",
        "B": "₹23,500",
        "C": "₹23,000",
        "D": "₹24,000"
      },
      "correct_answer": "A"
    },
    {
      "id": 28,
      "difficulty": "medium",
      "question": "🏦 Bank offers 6% C.I. ₹50,000 invested for 2 years. Find total amount. 💰",
      "options": {
        "A": "₹56,180",
        "B": "₹56,000",
        "C": "₹56,500",
        "D": "₹55,800"
      },
      "correct_answer": "A"
    },
    {
      "id": 29,
      "difficulty": "medium",
      "question": "📉 A machine's value falls 8% C.I. yearly. Initial ₹1,25,000. Value after 2 years? ⚙️",
      "options": {
        "A": "₹1,05,800",
        "B": "₹1,10,000",
        "C": "₹1,05,350",
        "D": "₹1,06,500"
      },
      "correct_answer": "A"
    },
    {
      "id": 30,
      "difficulty": "medium",
      "question": "🌳 Tree height 2m, grows 20% compound yearly. Height after 2 years? 🌲",
      "options": { "A": "2.88 m", "B": "2.8 m", "C": "2.9 m", "D": "3.0 m" },
      "correct_answer": "A"
    },
    {
      "id": 31,
      "difficulty": "medium",
      "question": "🛒 Cost of a bicycle is ₹6,000. It depreciates 5% each year (C.I.). Value after 2 years? 🚲",
      "options": { "A": "₹5,415", "B": "₹5,400", "C": "₹5,500", "D": "₹5,300" },
      "correct_answer": "A"
    },
    {
      "id": 32,
      "difficulty": "medium",
      "question": "🍰 Bakery sales increase 12% compound yearly. Sales ₹30,000 now. Sales after 2 years? 🥐",
      "options": {
        "A": "₹37,632",
        "B": "₹36,000",
        "C": "₹37,000",
        "D": "₹38,000"
      },
      "correct_answer": "A"
    },
    {
      "id": 33,
      "difficulty": "medium",
      "question": "🎨 Art piece worth ₹8,000 appreciates 15% C.I. yearly. Value after 2 years? 🖼️",
      "options": {
        "A": "₹10,580",
        "B": "₹10,600",
        "C": "₹10,580",
        "D": "₹10,500"
      },
      "correct_answer": "A"
    },
    {
      "id": 34,
      "difficulty": "medium",
      "question": "💎 Diamond value rises 25% C.I. yearly. Value ₹40,000 now. Value after 2 years? 💍",
      "options": {
        "A": "₹62,500",
        "B": "₹60,000",
        "C": "₹65,000",
        "D": "₹62,000"
      },
      "correct_answer": "A"
    },
    {
      "id": 35,
      "difficulty": "medium",
      "question": "🧪 Chemical evaporates reducing volume 6% C.I. daily. 500 ml today. Volume after 2 days? 🧫",
      "options": {
        "A": "441.8 ml",
        "B": "440 ml",
        "C": "442 ml",
        "D": "441 ml"
      },
      "correct_answer": "A"
    },
    {
      "id": 36,
      "difficulty": "medium",
      "question": "📺 TV price ₹25,000, down by 10% then 8% next year (C.I.). Price after 2 years? 📡",
      "options": {
        "A": "₹20,700",
        "B": "₹20,500",
        "C": "₹20,600",
        "D": "₹20,650"
      },
      "correct_answer": "A"
    },
    {
      "id": 37,
      "difficulty": "medium",
      "question": "🚀 Rocket fuel burns reducing 3% C.I. per minute. 1000L now. Fuel after 2 minutes? 🛰️",
      "options": { "A": "941.1 L", "B": "940 L", "C": "941 L", "D": "942 L" },
      "correct_answer": "A"
    },
    {
      "id": 38,
      "difficulty": "medium",
      "question": "🏏 Bat price ₹2,000 increases 7.5% C.I. yearly. Price after 2 years? 🏏",
      "options": {
        "A": "₹2,311.25",
        "B": "₹2,300",
        "C": "₹2,310",
        "D": "₹2,315"
      },
      "correct_answer": "A"
    },
    {
      "id": 39,
      "difficulty": "medium",
      "question": "🍩 Donut shop profit ₹12,000 grows 9% C.I. yearly. Profit after 2 years? 🍩",
      "options": {
        "A": "₹14,257.20",
        "B": "₹14,200",
        "C": "₹14,250",
        "D": "₹14,260"
      },
      "correct_answer": "A"
    },
    {
      "id": 40,
      "difficulty": "medium",
      "question": "🧸 Toy's production cost ₹450 reduces 4% C.I. yearly. Cost after 2 years? 🪀",
      "options": { "A": "₹414.72", "B": "₹415", "C": "₹414", "D": "₹416" },
      "correct_answer": "A"
    },
    {
      "id": 41,
      "difficulty": "hard",
      "question": "🏢 Building worth ₹40,00,000 appreciates 5% C.I. for 3 years. Find its value. 🏗️",
      "options": {
        "A": "₹46,30,500",
        "B": "₹46,00,000",
        "C": "₹46,20,500",
        "D": "₹46,50,000"
      },
      "correct_answer": "A"
    },
    {
      "id": 42,
      "difficulty": "hard",
      "question": "🚘 Car value depreciates 15% C.I. annually. If worth ₹7,00,000 now, find value after 3 years. 🚗",
      "options": {
        "A": "₹4,29,887.50",
        "B": "₹4,30,000",
        "C": "₹4,29,500",
        "D": "₹4,28,000"
      },
      "correct_answer": "A"
    },
    {
      "id": 43,
      "difficulty": "hard",
      "question": "📈 Population of town increases 4% C.I. yearly. Present 50,000. Population after 3 years? 👨‍👩‍👧‍👦",
      "options": { "A": "56,243", "B": "56,000", "C": "56,232", "D": "56,200" },
      "correct_answer": "C"
    },
    {
      "id": 44,
      "difficulty": "hard",
      "question": "💰 Find C.I. on ₹75,000 for 3 years at 8% p.a. compounded annually. 💸",
      "options": {
        "A": "₹19,497.60",
        "B": "₹19,500",
        "C": "₹20,000",
        "D": "₹18,000"
      },
      "correct_answer": "A"
    },
    {
      "id": 45,
      "difficulty": "hard",
      "question": "🏦 ₹1,20,000 at 12.5% C.I. for 3 years. Find amount. 🏛️",
      "options": {
        "A": "₹1,70,859.38",
        "B": "₹1,71,000",
        "C": "₹1,70,800",
        "D": "₹1,70,500"
      },
      "correct_answer": "A"
    },
    {
      "id": 46,
      "difficulty": "hard",
      "question": "🌿 Bacteria culture grows 20% C.I. hourly. Count 5000 now. Count after 3 hours? 🦠",
      "options": { "A": "8640", "B": "8600", "C": "8650", "D": "8645" },
      "correct_answer": "A"
    },
    {
      "id": 47,
      "difficulty": "hard",
      "question": "📉 Stock price falls 5% C.I. daily. ₹1000 per share now. Price after 3 days? 📊",
      "options": { "A": "₹857.38", "B": "₹857", "C": "₹858", "D": "₹856" },
      "correct_answer": "A"
    },
    {
      "id": 48,
      "difficulty": "hard",
      "question": "🍕 Pizza chain profit grows 18% C.I. yearly. Profit ₹2,00,000 now. Profit after 3 years? 🍔",
      "options": {
        "A": "₹3,29,232",
        "B": "₹3,29,000",
        "C": "₹3,30,000",
        "D": "₹3,28,000"
      },
      "correct_answer": "A"
    },
    {
      "id": 49,
      "difficulty": "hard",
      "question": "🏠 Rent increases 7% C.I. yearly. Current ₹15,000/month. Rent after 3 years? 🏘️",
      "options": {
        "A": "₹18,375.65",
        "B": "₹18,376",
        "C": "₹18,370",
        "D": "₹18,380"
      },
      "correct_answer": "A"
    },
    {
      "id": 50,
      "difficulty": "hard",
      "question": "🚗 Bike's resale value falls 12% C.I. yearly. Price ₹80,000 now. Price after 3 years? 🏍️",
      "options": {
        "A": "₹54,525.44",
        "B": "₹54,526",
        "C": "₹54,500",
        "D": "₹54,530"
      },
      "correct_answer": "A"
    },
    {
      "id": 51,
      "difficulty": "hard",
      "question": "🧳 Suitcase price ₹4,500, down 8% then 5% then 10% over 3 years (C.I.). Final price? 🧳",
      "options": {
        "A": "₹3,533.40",
        "B": "₹3,534",
        "C": "₹3,530",
        "D": "₹3,540"
      },
      "correct_answer": "A"
    },
    {
      "id": 52,
      "difficulty": "hard",
      "question": "🍎 Orchard yield increases 6% C.I. yearly. Yield 10,000 kg now. Yield after 3 years? 🍏",
      "options": {
        "A": "11,910.16 kg",
        "B": "11,911 kg",
        "C": "11,900 kg",
        "D": "11,920 kg"
      },
      "correct_answer": "A"
    },
    {
      "id": 53,
      "difficulty": "hard",
      "question": "📚 Library books increase 3% C.I. yearly. 20,000 books now. Books after 3 years? 📖",
      "options": { "A": "21,854", "B": "21,855", "C": "21,850", "D": "21,860" },
      "correct_answer": "A"
    },
    {
      "id": 54,
      "difficulty": "hard",
      "question": "🎭 Theater ticket price rises 9% C.I. yearly. ₹500 now. Price after 3 years? 🎫",
      "options": { "A": "₹647.51", "B": "₹647", "C": "₹648", "D": "₹646" },
      "correct_answer": "A"
    },
    {
      "id": 55,
      "difficulty": "hard",
      "question": "🧪 Medicine effectiveness reduces 4% C.I. monthly. 100% now. Effectiveness after 3 months? 💊",
      "options": { "A": "88.47%", "B": "88.5%", "C": "88%", "D": "88.4%" },
      "correct_answer": "A"
    },
    {
      "id": 56,
      "difficulty": "hard",
      "question": "🛒 Supermarket sales grow 11% C.I. yearly. Sales ₹50,00,000 now. Sales after 3 years? 🛍️",
      "options": {
        "A": "₹68,34,555",
        "B": "₹68,34,500",
        "C": "₹68,35,000",
        "D": "₹68,30,000"
      },
      "correct_answer": "A"
    },
    {
      "id": 57,
      "difficulty": "hard",
      "question": "🏏 Cricket bat price ₹8,000, up 15%, then 10%, then 5% over 3 years (C.I.). Final price? 🏏",
      "options": {
        "A": "₹10,626",
        "B": "₹10,627",
        "C": "₹10,625",
        "D": "₹10,630"
      },
      "correct_answer": "A"
    },
    {
      "id": 58,
      "difficulty": "hard",
      "question": "🧸 Toy demand falls 7% C.I. yearly. Demand 1,00,000 units now. Demand after 3 years? 🪁",
      "options": { "A": "80,436", "B": "80,440", "C": "80,430", "D": "80,435" },
      "correct_answer": "A"
    },
    {
      "id": 59,
      "difficulty": "hard",
      "question": "🌳 Forest area reduces 2% C.I. yearly. Area 2000 sq km now. Area after 3 years? 🌲",
      "options": {
        "A": "1882.38 sq km",
        "B": "1882",
        "C": "1882.4",
        "D": "1883"
      },
      "correct_answer": "A"
    },
    {
      "id": 60,
      "difficulty": "hard",
      "question": "📱 Mobile data usage grows 25% C.I. yearly. 50 GB/month now. Usage after 3 years? 📶",
      "options": {
        "A": "97.66 GB",
        "B": "97.7 GB",
        "C": "97 GB",
        "D": "98 GB"
      },
      "correct_answer": "A"
    }
  ]
}