{
  "title": "Direct Proportion (Unitary Method) - Grade 4 ICSE",
  "total_questions": 60,
  "questions": [
    {
      "id": 1,
      "difficulty": "easy",
      "question": "If 1 pencil costs ₹5, how much do 2 pencils cost? ✏️",
      "options": { "A": "₹5", "B": "₹7", "C": "₹10", "D": "₹15" },
      "correct_answer": "C"
    },
    {
      "id": 2,
      "difficulty": "easy",
      "question": "If one chocolate costs ₹10, how much for 3 chocolates? 🍫",
      "options": { "A": "₹20", "B": "₹30", "C": "₹40", "D": "₹50" },
      "correct_answer": "B"
    },
    {
      "id": 3,
      "difficulty": "easy",
      "question": "A car travels 60 km in 1 hour. How far will it travel in 2 hours? 🚗",
      "options": { "A": "100 km", "B": "120 km", "C": "140 km", "D": "160 km" },
      "correct_answer": "B"
    },
    {
      "id": 4,
      "difficulty": "easy",
      "question": "If 1 book has 100 pages, how many pages in 4 books? 📚",
      "options": { "A": "200", "B": "300", "C": "400", "D": "500" },
      "correct_answer": "C"
    },
    {
      "id": 5,
      "difficulty": "easy",
      "question": "One packet of biscuits has 10 biscuits. How many biscuits in 5 packets? 🍪",
      "options": { "A": "15", "B": "25", "C": "50", "D": "100" },
      "correct_answer": "C"
    },
    {
      "id": 6,
      "difficulty": "easy",
      "question": "If 1 litre of milk costs ₹50, what is the cost of 2 litres? 🥛",
      "options": { "A": "₹75", "B": "₹100", "C": "₹120", "D": "₹150" },
      "correct_answer": "B"
    },
    {
      "id": 7,
      "difficulty": "easy",
      "question": "A worker earns ₹200 per day. How much will he earn in 3 days? 👷",
      "options": { "A": "₹400", "B": "₹500", "C": "₹600", "D": "₹700" },
      "correct_answer": "C"
    },
    {
      "id": 8,
      "difficulty": "easy",
      "question": "One box contains 12 crayons. How many crayons in 3 boxes? 🖍️",
      "options": { "A": "24", "B": "36", "C": "48", "D": "60" },
      "correct_answer": "B"
    },
    {
      "id": 9,
      "difficulty": "easy",
      "question": "If 1 banana costs ₹4, what is the cost of 6 bananas? 🍌",
      "options": { "A": "₹18", "B": "₹20", "C": "₹22", "D": "₹24" },
      "correct_answer": "D"
    },
    {
      "id": 10,
      "difficulty": "easy",
      "question": "A cyclist covers 15 km in 1 hour. How far in 4 hours? 🚴",
      "options": { "A": "45 km", "B": "50 km", "C": "60 km", "D": "75 km" },
      "correct_answer": "C"
    },
    {
      "id": 11,
      "difficulty": "easy",
      "question": "If 1 kg of apples costs ₹80, how much for 2 kg? 🍎",
      "options": { "A": "₹120", "B": "₹140", "C": "₹160", "D": "₹180" },
      "correct_answer": "C"
    },
    {
      "id": 12,
      "difficulty": "easy",
      "question": "One notebook has 80 pages. How many pages in 5 notebooks? 📓",
      "options": { "A": "320", "B": "400", "C": "480", "D": "560" },
      "correct_answer": "B"
    },
    {
      "id": 13,
      "difficulty": "easy",
      "question": "If 1 packet of chips costs ₹20, how much for 4 packets? 🥔",
      "options": { "A": "₹60", "B": "₹70", "C": "₹80", "D": "₹90" },
      "correct_answer": "C"
    },
    {
      "id": 14,
      "difficulty": "easy",
      "question": "A machine makes 5 toys in 1 hour. How many toys in 6 hours? 🤖",
      "options": { "A": "25", "B": "30", "C": "35", "D": "40" },
      "correct_answer": "B"
    },
    {
      "id": 15,
      "difficulty": "easy",
      "question": "If 1 balloon costs ₹15, how much for 10 balloons? 🎈",
      "options": { "A": "₹100", "B": "₹120", "C": "₹140", "D": "₹150" },
      "correct_answer": "D"
    },
    {
      "id": 16,
      "difficulty": "easy",
      "question": "One bottle holds 500 ml of water. How much water in 3 bottles? 💧",
      "options": {
        "A": "1 litre",
        "B": "1.2 litres",
        "C": "1.5 litres",
        "D": "2 litres"
      },
      "correct_answer": "C"
    },
    {
      "id": 17,
      "difficulty": "easy",
      "question": "If 1 pen costs ₹12, how much for 8 pens? 🖊️",
      "options": { "A": "₹84", "B": "₹92", "C": "₹96", "D": "₹108" },
      "correct_answer": "C"
    },
    {
      "id": 18,
      "difficulty": "easy",
      "question": "A gardener plants 7 trees in 1 row. How many trees in 5 rows? 🌳",
      "options": { "A": "28", "B": "30", "C": "35", "D": "42" },
      "correct_answer": "C"
    },
    {
      "id": 19,
      "difficulty": "easy",
      "question": "If 1 ice cream costs ₹25, how much for 4 ice creams? 🍦",
      "options": { "A": "₹80", "B": "₹90", "C": "₹100", "D": "₹110" },
      "correct_answer": "C"
    },
    {
      "id": 20,
      "difficulty": "easy",
      "question": "One bag has 5 kg of rice. How much rice in 9 bags? 🍚",
      "options": { "A": "40 kg", "B": "45 kg", "C": "50 kg", "D": "55 kg" },
      "correct_answer": "B"
    },

    {
      "id": 21,
      "difficulty": "medium",
      "question": "If 3 chocolates cost ₹45, what is the cost of 1 chocolate? 🍫",
      "options": { "A": "₹10", "B": "₹12", "C": "₹15", "D": "₹18" },
      "correct_answer": "C"
    },
    {
      "id": 22,
      "difficulty": "medium",
      "question": "A truck uses 12 litres of diesel for 60 km. How much diesel for 100 km? 🚚",
      "options": {
        "A": "18 litres",
        "B": "20 litres",
        "C": "22 litres",
        "D": "24 litres"
      },
      "correct_answer": "B"
    },
    {
      "id": 23,
      "difficulty": "medium",
      "question": "If 5 books weigh 10 kg, how much does 1 book weigh? 📚",
      "options": { "A": "1.5 kg", "B": "2 kg", "C": "2.5 kg", "D": "3 kg" },
      "correct_answer": "B"
    },
    {
      "id": 24,
      "difficulty": "medium",
      "question": "A recipe needs 4 cups of flour for 8 cookies. How many cups for 12 cookies? 🍪",
      "options": { "A": "5", "B": "6", "C": "7", "D": "8" },
      "correct_answer": "B"
    },
    {
      "id": 25,
      "difficulty": "medium",
      "question": "If 8 pens cost ₹96, what is the cost of 3 pens? 🖊️",
      "options": { "A": "₹30", "B": "₹32", "C": "₹36", "D": "₹40" },
      "correct_answer": "C"
    },
    {
      "id": 26,
      "difficulty": "medium",
      "question": "A factory makes 150 toys in 5 days. How many toys in 1 day? 🏭",
      "options": { "A": "20", "B": "25", "C": "30", "D": "35" },
      "correct_answer": "C"
    },
    {
      "id": 27,
      "difficulty": "medium",
      "question": "If 12 metres of cloth cost ₹600, what is the cost of 4 metres? 👕",
      "options": { "A": "₹150", "B": "₹200", "C": "₹250", "D": "₹300" },
      "correct_answer": "B"
    },
    {
      "id": 28,
      "difficulty": "medium",
      "question": "A car can travel 240 km on 20 litres of petrol. How far can it travel on 5 litres? 🚗",
      "options": { "A": "50 km", "B": "60 km", "C": "70 km", "D": "80 km" },
      "correct_answer": "B"
    },
    {
      "id": 29,
      "difficulty": "medium",
      "question": "If 15 oranges cost ₹120, what is the cost of 25 oranges? 🍊",
      "options": { "A": "₹180", "B": "₹200", "C": "₹220", "D": "₹240" },
      "correct_answer": "B"
    },
    {
      "id": 30,
      "difficulty": "medium",
      "question": "A machine prints 360 pages in 6 hours. How many pages in 1 hour? 🖨️",
      "options": { "A": "50", "B": "55", "C": "60", "D": "65" },
      "correct_answer": "C"
    },
    {
      "id": 31,
      "difficulty": "medium",
      "question": "If 7 packets of biscuits cost ₹105, what is the cost of 10 packets? 🍪",
      "options": { "A": "₹130", "B": "₹140", "C": "₹150", "D": "₹160" },
      "correct_answer": "C"
    },
    {
      "id": 32,
      "difficulty": "medium",
      "question": "A tap fills 30 litres of water in 5 minutes. How much in 1 minute? 🚰",
      "options": {
        "A": "4 litres",
        "B": "5 litres",
        "C": "6 litres",
        "D": "7 litres"
      },
      "correct_answer": "C"
    },
    {
      "id": 33,
      "difficulty": "medium",
      "question": "If 9 boxes weigh 54 kg, how much do 5 boxes weigh? 📦",
      "options": { "A": "25 kg", "B": "28 kg", "C": "30 kg", "D": "32 kg" },
      "correct_answer": "C"
    },
    {
      "id": 34,
      "difficulty": "medium",
      "question": "A worker earns ₹840 in 7 days. How much in 3 days? 👷",
      "options": { "A": "₹320", "B": "₹340", "C": "₹360", "D": "₹380" },
      "correct_answer": "C"
    },
    {
      "id": 35,
      "difficulty": "medium",
      "question": "If 4 kg of sugar costs ₹200, what is the cost of 11 kg? 🍬",
      "options": { "A": "₹500", "B": "₹520", "C": "₹540", "D": "₹550" },
      "correct_answer": "D"
    },
    {
      "id": 36,
      "difficulty": "medium",
      "question": "A train covers 300 km in 4 hours. How far will it go in 7 hours? 🚂",
      "options": { "A": "500 km", "B": "525 km", "C": "550 km", "D": "600 km" },
      "correct_answer": "B"
    },
    {
      "id": 37,
      "difficulty": "medium",
      "question": "If 20 pencils cost ₹100, what is the cost of 35 pencils? ✏️",
      "options": { "A": "₹165", "B": "₹170", "C": "₹175", "D": "₹180" },
      "correct_answer": "C"
    },
    {
      "id": 38,
      "difficulty": "medium",
      "question": "A pump fills 500 litres in 10 minutes. How much in 3 minutes? ⛽",
      "options": {
        "A": "120 litres",
        "B": "140 litres",
        "C": "150 litres",
        "D": "180 litres"
      },
      "correct_answer": "C"
    },
    {
      "id": 39,
      "difficulty": "medium",
      "question": "If 6 shirts cost ₹1800, what is the cost of 9 shirts? 👔",
      "options": { "A": "₹2400", "B": "₹2600", "C": "₹2700", "D": "₹2800" },
      "correct_answer": "C"
    },
    {
      "id": 40,
      "difficulty": "medium",
      "question": "A man walks 12 km in 3 hours. How far in 5 hours? 🚶",
      "options": { "A": "18 km", "B": "20 km", "C": "22 km", "D": "24 km" },
      "correct_answer": "B"
    },

    {
      "id": 41,
      "difficulty": "hard",
      "question": "If 5 toys cost ₹375, how many toys can be bought for ₹900? 🧸",
      "options": { "A": "10", "B": "11", "C": "12", "D": "13" },
      "correct_answer": "C"
    },
    {
      "id": 42,
      "difficulty": "hard",
      "question": "A car travels 180 km in 3 hours. How long will it take to travel 300 km at the same speed? 🚗",
      "options": {
        "A": "4 hours",
        "B": "4.5 hours",
        "C": "5 hours",
        "D": "5.5 hours"
      },
      "correct_answer": "C"
    },
    {
      "id": 43,
      "difficulty": "hard",
      "question": "If 8 metres of cloth cost ₹960, how much cloth can be bought for ₹600? 👗",
      "options": { "A": "4 m", "B": "4.5 m", "C": "5 m", "D": "5.5 m" },
      "correct_answer": "C"
    },
    {
      "id": 44,
      "difficulty": "hard",
      "question": "A machine produces 240 bolts in 8 hours. How many bolts will it produce in 15 hours? 🔩",
      "options": { "A": "400", "B": "420", "C": "440", "D": "450" },
      "correct_answer": "D"
    },
    {
      "id": 45,
      "difficulty": "hard",
      "question": "If 15 workers can build a wall in 10 days, how many days will 25 workers take? (Hint: Inverse proportion) 🧱",
      "options": { "A": "4", "B": "5", "C": "6", "D": "7" },
      "correct_answer": "C"
    },
    {
      "id": 46,
      "difficulty": "hard",
      "question": "A garrison has food for 200 soldiers for 30 days. How long will it last for 150 soldiers? 🍞",
      "options": {
        "A": "35 days",
        "B": "40 days",
        "C": "45 days",
        "D": "50 days"
      },
      "correct_answer": "B"
    },
    {
      "id": 47,
      "difficulty": "hard",
      "question": "If 12 pumps can empty a tank in 4 hours, how long will 16 pumps take? (Inverse proportion) ⛽",
      "options": {
        "A": "2 hours",
        "B": "2.5 hours",
        "C": "3 hours",
        "D": "3.5 hours"
      },
      "correct_answer": "C"
    },
    {
      "id": 48,
      "difficulty": "hard",
      "question": "A car consumes 25 litres of petrol for 200 km. How much petrol for 320 km? 🚗",
      "options": {
        "A": "38 litres",
        "B": "40 litres",
        "C": "42 litres",
        "D": "45 litres"
      },
      "correct_answer": "B"
    },
    {
      "id": 49,
      "difficulty": "hard",
      "question": "If 18 books cost ₹1260, how many books can be bought for ₹1750? 📚",
      "options": { "A": "20", "B": "22", "C": "24", "D": "25" },
      "correct_answer": "D"
    },
    {
      "id": 50,
      "difficulty": "hard",
      "question": "A train travels 450 km in 5 hours. How long will it take to travel 720 km? 🚂",
      "options": {
        "A": "7 hours",
        "B": "7.5 hours",
        "C": "8 hours",
        "D": "8.5 hours"
      },
      "correct_answer": "C"
    },
    {
      "id": 51,
      "difficulty": "hard",
      "question": "If 10 kg of rice costs ₹500, what is the cost of 14 kg? 🍚",
      "options": { "A": "₹600", "B": "₹650", "C": "₹700", "D": "₹750" },
      "correct_answer": "C"
    },
    {
      "id": 52,
      "difficulty": "hard",
      "question": "A pipe fills a tank in 6 hours. How much time will it take to fill 2/3 of the tank? 🚰",
      "options": {
        "A": "3 hours",
        "B": "4 hours",
        "C": "5 hours",
        "D": "6 hours"
      },
      "correct_answer": "B"
    },
    {
      "id": 53,
      "difficulty": "hard",
      "question": "A man earns ₹4200 in 7 days. How much will he earn in 12 days? 💰",
      "options": { "A": "₹6800", "B": "₹7000", "C": "₹7200", "D": "₹7500" },
      "correct_answer": "C"
    },
    {
      "id": 54,
      "difficulty": "hard",
      "question": "If 5 machines produce 1000 items in 10 days, how many items will 8 machines produce in 15 days? 🏭",
      "options": { "A": "2000", "B": "2200", "C": "2400", "D": "2600" },
      "correct_answer": "C"
    },
    {
      "id": 55,
      "difficulty": "hard",
      "question": "A bus covers 240 km in 4 hours. At the same speed, how far will it travel in 7 hours? 🚌",
      "options": { "A": "400 km", "B": "420 km", "C": "440 km", "D": "460 km" },
      "correct_answer": "B"
    },
    {
      "id": 56,
      "difficulty": "hard",
      "question": "If 30 metres of wire cost ₹450, what is the cost of 42 metres? 🔌",
      "options": { "A": "₹580", "B": "₹600", "C": "₹620", "D": "₹630" },
      "correct_answer": "D"
    },
    {
      "id": 57,
      "difficulty": "hard",
      "question": "A typist types 360 words in 6 minutes. How many words in 10 minutes? ⌨️",
      "options": { "A": "500", "B": "550", "C": "600", "D": "650" },
      "correct_answer": "C"
    },
    {
      "id": 58,
      "difficulty": "hard",
      "question": "If a family consumes 15 kg of wheat in 30 days, how much will they consume in 45 days? 🌾",
      "options": { "A": "20 kg", "B": "21.5 kg", "C": "22.5 kg", "D": "25 kg" },
      "correct_answer": "C"
    },
    {
      "id": 59,
      "difficulty": "hard",
      "question": "A printer prints 1200 pages in 8 hours. How many pages in 12 hours? 🖨️",
      "options": { "A": "1600", "B": "1700", "C": "1800", "D": "1900" },
      "correct_answer": "C"
    },
    {
      "id": 60,
      "difficulty": "hard",
      "question": "If 6 cars carry 180 people, how many people can 11 cars carry? 🚗",
      "options": { "A": "300", "B": "320", "C": "330", "D": "340" },
      "correct_answer": "C"
    }
  ]
}