{
  "title": "Ratio and its Applications - Grade 7 ICSE",
  "total_questions": 60,
  "questions": [
    {
      "id": 1,
      "difficulty": "easy",
      "question": "🍎 Ratio of apples to oranges is 3 : 5. If apples are 12, how many oranges?",
      "options": { "A": "18", "B": "19", "C": "20", "D": "21" },
      "correct_answer": "C"
    },
    {
      "id": 2,
      "difficulty": "easy",
      "question": "💰 Divide ₹100 in ratio 2 : 3. Larger part?",
      "options": { "A": "₹58", "B": "₹59", "C": "₹60", "D": "₹62" },
      "correct_answer": "C"
    },
    {
      "id": 3,
      "difficulty": "easy",
      "question": "👦 Boys : Girls = 4 : 5. If boys = 16, total students?",
      "options": { "A": "34", "B": "35", "C": "36", "D": "37" },
      "correct_answer": "C"
    },
    {
      "id": 4,
      "difficulty": "easy",
      "question": "📏 Simplify ratio 24 : 36.",
      "options": { "A": "2 : 3", "B": "3 : 4", "C": "4 : 5", "D": "5 : 6" },
      "correct_answer": "A"
    },
    {
      "id": 5,
      "difficulty": "easy",
      "question": "🍫 Chocolates in box: dark to milk = 3 : 7. If milk chocolates = 21, dark chocolates?",
      "options": { "A": "8", "B": "9", "C": "10", "D": "11" },
      "correct_answer": "B"
    },
    {
      "id": 6,
      "difficulty": "easy",
      "question": "📚 Books : Pens = 5 : 2. If books = 25, pens?",
      "options": { "A": "9", "B": "10", "C": "11", "D": "12" },
      "correct_answer": "B"
    },
    {
      "id": 7,
      "difficulty": "easy",
      "question": "🏀 Ratio wins : losses = 5 : 3. If wins = 20, losses?",
      "options": { "A": "10", "B": "11", "C": "12", "D": "13" },
      "correct_answer": "C"
    },
    {
      "id": 8,
      "difficulty": "easy",
      "question": "🍕 Pizza slices veg : nonveg = 7 : 5. If veg slices = 14, total slices?",
      "options": { "A": "22", "B": "23", "C": "24", "D": "25" },
      "correct_answer": "C"
    },
    {
      "id": 9,
      "difficulty": "easy",
      "question": "💰 Salary spent : saved = 8 : 3. If saved = ₹900, salary?",
      "options": { "A": "₹3200", "B": "₹3250", "C": "₹3300", "D": "₹3350" },
      "correct_answer": "C"
    },
    {
      "id": 10,
      "difficulty": "easy",
      "question": "📏 Length : breadth = 5 : 4. If breadth = 12 cm, length?",
      "options": { "A": "14 cm", "B": "15 cm", "C": "16 cm", "D": "17 cm" },
      "correct_answer": "B"
    },
    {
      "id": 11,
      "difficulty": "easy",
      "question": "👨‍👩‍👧 Family adults : children = 3 : 2. If adults = 9, children?",
      "options": { "A": "5", "B": "6", "C": "7", "D": "8" },
      "correct_answer": "B"
    },
    {
      "id": 12,
      "difficulty": "easy",
      "question": "🍓 Strawberries : blueberries = 7 : 4. If blueberries = 16, strawberries?",
      "options": { "A": "26", "B": "27", "C": "28", "D": "29" },
      "correct_answer": "C"
    },
    {
      "id": 13,
      "difficulty": "easy",
      "question": "💰 A : B = 2 : 3, B : C = 4 : 5. Find A : C.",
      "options": {
        "A": "8 : 15",
        "B": "9 : 16",
        "C": "10 : 17",
        "D": "11 : 18"
      },
      "correct_answer": "A"
    },
    {
      "id": 14,
      "difficulty": "easy",
      "question": "📦 Ratio small : medium : large boxes = 2 : 3 : 5. If medium = 12, total boxes?",
      "options": { "A": "38", "B": "39", "C": "40", "D": "41" },
      "correct_answer": "C"
    },
    {
      "id": 15,
      "difficulty": "easy",
      "question": "🍰 Cake eaten : left = 5 : 3. If eaten = 15 slices, total slices?",
      "options": { "A": "22", "B": "23", "C": "24", "D": "25" },
      "correct_answer": "C"
    },
    {
      "id": 16,
      "difficulty": "easy",
      "question": "⏱️ Study : play = 7 : 2. If study time = 35 min, play time?",
      "options": { "A": "9 min", "B": "10 min", "C": "11 min", "D": "12 min" },
      "correct_answer": "B"
    },
    {
      "id": 17,
      "difficulty": "easy",
      "question": "🚗 Petrol used : left = 3 : 5. If used = 9 L, total petrol?",
      "options": { "A": "22 L", "B": "23 L", "C": "24 L", "D": "25 L" },
      "correct_answer": "C"
    },
    {
      "id": 18,
      "difficulty": "easy",
      "question": "📊 Ratio of 250 g to 1 kg = ?",
      "options": { "A": "1 : 3", "B": "1 : 4", "C": "1 : 5", "D": "1 : 6" },
      "correct_answer": "B"
    },
    {
      "id": 19,
      "difficulty": "easy",
      "question": "👕 Shirts : trousers = 5 : 6. If shirts = 15, trousers?",
      "options": { "A": "16", "B": "17", "C": "18", "D": "19" },
      "correct_answer": "C"
    },
    {
      "id": 20,
      "difficulty": "easy",
      "question": "🍏 Green : red apples = 2 : 5. If total = 28, green apples?",
      "options": { "A": "7", "B": "8", "C": "9", "D": "10" },
      "correct_answer": "B"
    },
    {
      "id": 21,
      "difficulty": "medium",
      "question": "💰 ₹5500 divided A : B = 4 : 7. Difference in shares?",
      "options": { "A": "₹1450", "B": "₹1480", "C": "₹1500", "D": "₹1520" },
      "correct_answer": "C"
    },
    {
      "id": 22,
      "difficulty": "medium",
      "question": "📏 Ratio 2.5 : 3.5 simplified = ?",
      "options": { "A": "4 : 5", "B": "5 : 7", "C": "6 : 8", "D": "7 : 9" },
      "correct_answer": "B"
    },
    {
      "id": 23,
      "difficulty": "medium",
      "question": "👨‍👩‍👧‍👦 Ages A : B = 3 : 4. After 5 years, ratio 4 : 5. Present age of A?",
      "options": { "A": "12", "B": "13", "C": "14", "D": "15" },
      "correct_answer": "D"
    },
    {
      "id": 24,
      "difficulty": "medium",
      "question": "🍫 If ratio chocolates A : B : C = 2 : 3 : 4 and C gets 8 more than A, total chocolates?",
      "options": { "A": "34", "B": "35", "C": "36", "D": "37" },
      "correct_answer": "C"
    },
    {
      "id": 25,
      "difficulty": "medium",
      "question": "📚 Books sold : unsold = 5 : 3. If sold = 75, unsold?",
      "options": { "A": "43", "B": "44", "C": "45", "D": "46" },
      "correct_answer": "C"
    },
    {
      "id": 26,
      "difficulty": "medium",
      "question": "💰 Monthly income : savings = 11 : 2. If savings = ₹4000, income?",
      "options": { "A": "₹21500", "B": "₹21800", "C": "₹22000", "D": "₹22200" },
      "correct_answer": "C"
    },
    {
      "id": 27,
      "difficulty": "medium",
      "question": "🍎 Apples in 2 bags ratio 3 : 4. If 1st bag has 18 apples, 2nd bag?",
      "options": { "A": "22", "B": "23", "C": "24", "D": "25" },
      "correct_answer": "C"
    },
    {
      "id": 28,
      "difficulty": "medium",
      "question": "📏 Perimeter of rectangle = 60 cm, sides ratio 3 : 2. Area?",
      "options": {
        "A": "180 cm²",
        "B": "192 cm²",
        "C": "216 cm²",
        "D": "240 cm²"
      },
      "correct_answer": "C"
    },
    {
      "id": 29,
      "difficulty": "medium",
      "question": "👦 Class boys : girls = 7 : 8. If 2 boys leave, ratio becomes 5 : 6. Original boys?",
      "options": { "A": "26", "B": "27", "C": "28", "D": "29" },
      "correct_answer": "C"
    },
    {
      "id": 30,
      "difficulty": "medium",
      "question": "💰 Money with A : B = 5 : 6. If A gives ₹10 to B, ratio becomes 4 : 7. Original total?",
      "options": {
        "A": "₹108",
        "B": "₹110",
        "C": "₹120",
        "D": "₹132"
      },
      "correct_answer": "B"
    },
    {
      "id": 31,
      "difficulty": "medium",
      "question": "🍰 Cake pieces eaten by 3 friends ratio 2 : 3 : 4. If total pieces = 36, largest share?",
      "options": { "A": "14", "B": "15", "C": "16", "D": "17" },
      "correct_answer": "C"
    },
    {
      "id": 32,
      "difficulty": "medium",
      "question": "📦 Ratio of three numbers = 3 : 4 : 5. Sum = 180. Smallest?",
      "options": { "A": "43", "B": "44", "C": "45", "D": "46" },
      "correct_answer": "C"
    },
    {
      "id": 33,
      "difficulty": "medium",
      "question": "🚗 Petrol used : left = 5 : 11. If used = 20 L, total capacity?",
      "options": { "A": "62 L", "B": "63 L", "C": "64 L", "D": "65 L" },
      "correct_answer": "C"
    },
    {
      "id": 34,
      "difficulty": "medium",
      "question": "📊 If a : b = 5 : 7 and b : c = 14 : 15, find a : b : c.",
      "options": {
        "A": "10 : 14 : 15",
        "B": "10 : 15 : 14",
        "C": "15 : 14 : 10",
        "D": "14 : 10 : 15"
      },
      "correct_answer": "A"
    },
    {
      "id": 35,
      "difficulty": "medium",
      "question": "🏠 Rent : food : others = 5 : 4 : 3. If rent = ₹15000, others?",
      "options": { "A": "₹8800", "B": "₹8900", "C": "₹9000", "D": "₹9100" },
      "correct_answer": "C"
    },
    {
      "id": 36,
      "difficulty": "medium",
      "question": "📏 Two numbers ratio 7 : 9, difference = 12. Larger number?",
      "options": { "A": "52", "B": "53", "C": "54", "D": "55" },
      "correct_answer": "C"
    },
    {
      "id": 37,
      "difficulty": "medium",
      "question": "💰 Profit shared A : B = 5 : 3. If B’s share ₹4500, total profit?",
      "options": { "A": "₹11800", "B": "₹11900", "C": "₹12000", "D": "₹12100" },
      "correct_answer": "C"
    },
    {
      "id": 38,
      "difficulty": "medium",
      "question": "📚 English : Maths marks = 8 : 7. If Maths = 70, English?",
      "options": { "A": "78", "B": "79", "C": "80", "D": "81" },
      "correct_answer": "C"
    },
    {
      "id": 39,
      "difficulty": "medium",
      "question": "🍏 Fruits apples : mangoes = 7 : 5. If apples = 35, mangoes?",
      "options": { "A": "24", "B": "25", "C": "26", "D": "27" },
      "correct_answer": "B"
    },
    {
      "id": 40,
      "difficulty": "medium",
      "question": "🏀 Points scored in 3 games ratio 3 : 4 : 5. Total points = 180. Points in 2nd game?",
      "options": { "A": "58", "B": "59", "C": "60", "D": "61" },
      "correct_answer": "C"
    },
    {
      "id": 41,
      "difficulty": "hard",
      "question": "👨‍👦 Ages father : son = 7 : 2. After 10 years, ratio 2 : 1. Present age of son?",
      "options": {
        "A": "20/3",
        "B": "7",
        "C": "8",
        "D": "9"
      },
      "correct_answer": "A"
    },
    {
      "id": 42,
      "difficulty": "hard",
      "question": "💰 A : B = 3 : 4, B : C = 5 : 6. If A + C = 77, find B.",
      "options": { "A": "30", "B": "32", "C": "34", "D": "36" },
      "correct_answer": "B"
    },
    {
      "id": 43,
      "difficulty": "hard",
      "question": "📏 In a mixture, milk : water = 5 : 3. If 10 L water added, ratio becomes 5 : 4. Original milk?",
      "options": { "A": "48 L", "B": "49 L", "C": "50 L", "D": "51 L" },
      "correct_answer": "C"
    },
    {
      "id": 44,
      "difficulty": "hard",
      "question": "🍫 Chocolates in 3 boxes ratio 3 : 4 : 5. If chocolates moved so ratio becomes 7 : 8 : 9, what moved?",
      "options": {
        "A": "2 from 1st to 3rd",
        "B": "2 from 3rd to 1st",
        "C": "3 from 1st to 2nd",
        "D": "3 from 2nd to 3rd"
      },
      "correct_answer": "A"
    },
    {
      "id": 45,
      "difficulty": "hard",
      "question": "🏠 Property divided among 3 sons ratio 2 : 3 : 4. If middle son gets ₹15000 more than youngest, total property?",
      "options": {
        "A": "₹133000",
        "B": "₹134000",
        "C": "₹135000",
        "D": "₹136000"
      },
      "correct_answer": "C"
    },
    {
      "id": 46,
      "difficulty": "hard",
      "question": "📊 If (x + y) : (x - y) = 5 : 2, find x : y.",
      "options": { "A": "7 : 3", "B": "8 : 3", "C": "9 : 4", "D": "10 : 3" },
      "correct_answer": "A"
    },
    {
      "id": 47,
      "difficulty": "hard",
      "question": "👨‍🎓 Class ratio boys : girls = 5 : 4. If 10 girls join, ratio becomes 5 : 6. Original boys?",
      "options": { "A": "48", "B": "49", "C": "50", "D": "51" },
      "correct_answer": "C"
    },
    {
      "id": 48,
      "difficulty": "hard",
      "question": "💰 Incomes ratio 7 : 5, expenses ratio 3 : 2. If each saves ₹2000, incomes?",
      "options": {
        "A": "₹14000, ₹10000",
        "B": "₹14500, ₹10500",
        "C": "₹15000, ₹11000",
        "D": "₹15500, ₹11500"
      },
      "correct_answer": "A"
    },
    {
      "id": 49,
      "difficulty": "hard",
      "question": "📦 Alloy copper : zinc = 7 : 3. If 10 kg zinc added, ratio 7 : 5. Original copper?",
      "options": { "A": "32 kg", "B": "33 kg", "C": "34 kg", "D": "35 kg" },
      "correct_answer": "D"
    },
    {
      "id": 50,
      "difficulty": "hard",
      "question": "🍏 Fruits apples : oranges = 5 : 6. If 5 apples added, ratio becomes 10 : 11. Original apples?",
      "options": { "A": "23", "B": "24", "C": "25", "D": "26" },
      "correct_answer": "C"
    },
    {
      "id": 51,
      "difficulty": "hard",
      "question": "📐 If a : b = 3 : 4 and b : c = 8 : 9, find a : c.",
      "options": { "A": "2 : 3", "B": "3 : 4", "C": "4 : 5", "D": "5 : 6" },
      "correct_answer": "A"
    },
    {
      "id": 52,
      "difficulty": "hard",
      "question": "💰 Money ratio A : B = 5 : 9. B gives ₹12 to A, ratio becomes 7 : 9. Original total?",
      "options": {
        "A": "₹148",
        "B": "₹149",
        "C": "₹149⅓",
        "D": "₹150"
      },
      "correct_answer": "C"
    },
    {
      "id": 53,
      "difficulty": "hard",
      "question": "🍫 Chocolates in bag A : B = 5 : 4. If A gives 10 to B, ratio becomes 5 : 6. Original total?",
      "options": { "A": "80", "B": "81", "C": "82", "D": "83" },
      "correct_answer": "B"
    },
    {
      "id": 54,
      "difficulty": "hard",
      "question": "📏 Rectangle sides ratio 5 : 3. If area = 240 cm², perimeter?",
      "options": { "A": "62 cm", "B": "63 cm", "C": "64 cm", "D": "65 cm" },
      "correct_answer": "C"
    },
    {
      "id": 55,
      "difficulty": "hard",
      "question": "👦 Class ratio boys : girls = 3 : 2. If 10 boys leave and 10 girls join, ratio 1 : 2. Original total students?",
      "options": { "A": "48", "B": "50", "C": "52", "D": "54" },
      "correct_answer": "B"
    },
    {
      "id": 56,
      "difficulty": "hard",
      "question": "💰 Investment ratio A : B = 4 : 5. Profit ratio 5 : 6. If A invested for 10 months, B’s time?",
      "options": {
        "A": "11 months",
        "B": "12 months",
        "C": "13 months",
        "D": "14 months"
      },
      "correct_answer": "B"
    },
    {
      "id": 57,
      "difficulty": "hard",
      "question": "📦 Two jars contain milk and water in ratio 3 : 2 and 4 : 1. Equal volumes mixed. New ratio?",
      "options": { "A": "7 : 3", "B": "8 : 3", "C": "9 : 4", "D": "10 : 3" },
      "correct_answer": "A"
    },
    {
      "id": 58,
      "difficulty": "hard",
      "question": "📊 If a/2 = b/3 = c/4 and a+b+c = 108, find b.",
      "options": { "A": "34", "B": "35", "C": "36", "D": "37" },
      "correct_answer": "C"
    },
    {
      "id": 59,
      "difficulty": "hard",
      "question": "🏠 Ages of mother and daughter ratio 9 : 2. After 8 years ratio 7 : 3. Daughter’s present age?",
      "options": { "A": "10", "B": "11", "C": "12", "D": "13" },
      "correct_answer": "C"
    },
    {
      "id": 60,
      "difficulty": "hard",
      "question": "🍎 Two numbers ratio 5 : 8. If each increased by 15, ratio becomes 2 : 3. Original numbers sum?",
      "options": { "A": "63", "B": "64", "C": "65", "D": "66" },
      "correct_answer": "C"
    }
  ]
}