{
  "title": "Simple Interest (Comparing Quantities) - Grade 8 CBSE",
  "total_questions": 60,
  "questions": [
    {"id": 1, "difficulty": "easy", "question": "Find the simple interest on ₹1000 at 5% per annum for 2 years.", "options": {"A": "₹100", "B": "₹150", "C": "₹200", "D": "₹250"}, "correct_answer": "A"},
    {"id": 2, "difficulty": "easy", "question": "Find SI on ₹600 at 10% per annum for 1 year.", "options": {"A": "₹40", "B": "₹60", "C": "₹80", "D": "₹100"}, "correct_answer": "B"},
    {"id": 3, "difficulty": "easy", "question": "Find SI on ₹500 at 8% per annum for 3 years.", "options": {"A": "₹80", "B": "₹100", "C": "₹120", "D": "₹150"}, "correct_answer": "C"},
    {"id": 4, "difficulty": "easy", "question": "What is SI on ₹2000 at 5% per annum for 1 year?", "options": {"A": "₹75", "B": "₹80", "C": "₹90", "D": "₹100"}, "correct_answer": "D"},
    {"id": 5, "difficulty": "easy", "question": "Find SI on ₹400 at 12% per annum for 2 years.", "options": {"A": "₹90", "B": "₹96", "C": "₹100", "D": "₹120"}, "correct_answer": "A"},
    {"id": 6, "difficulty": "easy", "question": "Find SI on ₹800 at 5% per annum for 3 years.", "options": {"A": "₹80", "B": "₹100", "C": "₹120", "D": "₹140"}, "correct_answer": "B"},
    {"id": 7, "difficulty": "easy", "question": "Find SI on ₹300 at 10% per annum for 2 years.", "options": {"A": "₹50", "B": "₹60", "C": "₹70", "D": "₹80"}, "correct_answer": "C"},
    {"id": 8, "difficulty": "easy", "question": "Find SI on ₹1000 at 4% per annum for 3 years.", "options": {"A": "₹100", "B": "₹110", "C": "₹120", "D": "₹130"}, "correct_answer": "D"},
    {"id": 9, "difficulty": "easy", "question": "What is SI on ₹1200 at 6% per annum for 2 years?", "options": {"A": "₹100", "B": "₹120", "C": "₹144", "D": "₹150"}, "correct_answer": "A"},
    {"id": 10, "difficulty": "easy", "question": "Find SI on ₹900 at 7% per annum for 2 years.", "options": {"A": "₹100", "B": "₹110", "C": "₹126", "D": "₹140"}, "correct_answer": "B"},

    {"id": 11, "difficulty": "easy", "question": "Find SI on ₹1500 at 5% per annum for 4 years.", "options": {"A": "₹250", "B": "₹260", "C": "₹280", "D": "₹300"}, "correct_answer": "C"},
    {"id": 12, "difficulty": "easy", "question": "Find SI on ₹700 at 3% per annum for 5 years.", "options": {"A": "₹100", "B": "₹105", "C": "₹110", "D": "₹115"}, "correct_answer": "D"},
    {"id": 13, "difficulty": "easy", "question": "Find SI on ₹2000 at 6% per annum for 2 years.", "options": {"A": "₹200", "B": "₹220", "C": "₹240", "D": "₹260"}, "correct_answer": "A"},
    {"id": 14, "difficulty": "easy", "question": "What is SI on ₹2500 at 8% per annum for 1 year?", "options": {"A": "₹150", "B": "₹160", "C": "₹180", "D": "₹200"}, "correct_answer": "B"},
    {"id": 15, "difficulty": "easy", "question": "Find SI on ₹1800 at 5% per annum for 3 years.", "options": {"A": "₹200", "B": "₹220", "C": "₹240", "D": "₹270"}, "correct_answer": "C"},
    {"id": 16, "difficulty": "easy", "question": "Find SI on ₹500 at 12% per annum for 2 years.", "options": {"A": "₹100", "B": "₹110", "C": "₹120", "D": "₹130"}, "correct_answer": "D"},
    {"id": 17, "difficulty": "easy", "question": "Find SI on ₹3000 at 6% per annum for 1 year.", "options": {"A": "₹150", "B": "₹160", "C": "₹170", "D": "₹180"}, "correct_answer": "A"},
    {"id": 18, "difficulty": "easy", "question": "Find SI on ₹4000 at 4% per annum for 2 years.", "options": {"A": "₹300", "B": "₹320", "C": "₹340", "D": "₹360"}, "correct_answer": "B"},
    {"id": 19, "difficulty": "easy", "question": "Find SI on ₹1200 at 9% per annum for 1 year.", "options": {"A": "₹108", "B": "₹110", "C": "₹115", "D": "₹120"}, "correct_answer": "C"},
    {"id": 20, "difficulty": "easy", "question": "Find SI on ₹1600 at 10% per annum for 1 year.", "options": {"A": "₹150", "B": "₹160", "C": "₹170", "D": "₹180"}, "correct_answer": "D"},

    {"id": 21, "difficulty": "medium", "question": "A sum of ₹5000 amounts to ₹5600 in 2 years. Find the rate of interest.", "options": {"A": "4%", "B": "6%", "C": "8%", "D": "10%"}, "correct_answer": "A"},
    {"id": 22, "difficulty": "medium", "question": "Find the amount for ₹3000 at 5% per annum for 3 years.", "options": {"A": "₹3300", "B": "₹3450", "C": "₹3600", "D": "₹3650"}, "correct_answer": "B"},
    {"id": 23, "difficulty": "medium", "question": "If SI on ₹2000 for 4 years is ₹640, find the rate.", "options": {"A": "6%", "B": "7%", "C": "8%", "D": "10%"}, "correct_answer": "C"},
    {"id": 24, "difficulty": "medium", "question": "Find SI on ₹2500 at 6% per annum for 5 years.", "options": {"A": "₹650", "B": "₹700", "C": "₹750", "D": "₹800"}, "correct_answer": "D"},
    {"id": 25, "difficulty": "medium", "question": "A sum becomes ₹1800 in 3 years at 5% simple interest. Find the principal.", "options": {"A": "₹1500", "B": "₹1600", "C": "₹1650", "D": "₹1700"}, "correct_answer": "A"},
    {"id": 26, "difficulty": "medium", "question": "Find the rate if SI on ₹4000 for 2 years is ₹320.", "options": {"A": "3%", "B": "4%", "C": "5%", "D": "6%"}, "correct_answer": "B"},
    {"id": 27, "difficulty": "medium", "question": "What is SI on ₹1800 at 7% per annum for 3 years?", "options": {"A": "₹350", "B": "₹378", "C": "₹400", "D": "₹420"}, "correct_answer": "C"},
    {"id": 28, "difficulty": "medium", "question": "The SI on a sum for 2 years at 8% per annum is ₹320. Find the sum.", "options": {"A": "₹1800", "B": "₹2000", "C": "₹2200", "D": "₹2400"}, "correct_answer": "D"},
    {"id": 29, "difficulty": "medium", "question": "Find the amount on ₹2500 at 12% per annum for 2 years.", "options": {"A": "₹2800", "B": "₹2850", "C": "₹2900", "D": "₹3000"}, "correct_answer": "A"},
    {"id": 30, "difficulty": "medium", "question": "If SI on a sum is ₹450 at 9% per annum for 2 years, find the principal.", "options": {"A": "₹2000", "B": "₹2500", "C": "₹3000", "D": "₹3500"}, "correct_answer": "B"},

    {"id": 31, "difficulty": "medium", "question": "Find the rate if a sum of ₹3000 becomes ₹3600 in 4 years.", "options": {"A": "4%", "B": "5%", "C": "6%", "D": "7%"}, "correct_answer": "C"},
    {"id": 32, "difficulty": "medium", "question": "What is SI on ₹4500 at 8% per annum for 3 years?", "options": {"A": "₹900", "B": "₹1080", "C": "₹1100", "D": "₹1150"}, "correct_answer": "D"},
    {"id": 33, "difficulty": "medium", "question": "Find SI on ₹3500 for 5 years at 4% per annum.", "options": {"A": "₹600", "B": "₹650", "C": "₹700", "D": "₹750"}, "correct_answer": "A"},
    {"id": 34, "difficulty": "medium", "question": "If SI on a certain sum for 3 years at 5% per annum is ₹225, find the sum.", "options": {"A": "₹1200", "B": "₹1300", "C": "₹1400", "D": "₹1500"}, "correct_answer": "B"},
    {"id": 35, "difficulty": "medium", "question": "Find amount of ₹5000 at 6% per annum for 2 years.", "options": {"A": "₹5500", "B": "₹5600", "C": "₹5650", "D": "₹5700"}, "correct_answer": "C"},
    {"id": 36, "difficulty": "medium", "question": "At what rate will ₹6000 yield SI of ₹900 in 3 years?", "options": {"A": "3%", "B": "4%", "C": "5%", "D": "6%"}, "correct_answer": "D"},
    {"id": 37, "difficulty": "medium", "question": "Find SI on ₹7000 at 5% per annum for 4 years.", "options": {"A": "₹1200", "B": "₹1300", "C": "₹1400", "D": "₹1500"}, "correct_answer": "A"},
    {"id": 38, "difficulty": "medium", "question": "If SI on a sum for 2 years is ₹500 at 10% per annum, find the sum.", "options": {"A": "₹2000", "B": "₹2200", "C": "₹2400", "D": "₹2500"}, "correct_answer": "B"},
    {"id": 39, "difficulty": "medium", "question": "Find SI on ₹9000 at 6% per annum for 2 years.", "options": {"A": "₹900", "B": "₹950", "C": "₹1000", "D": "₹1080"}, "correct_answer": "C"},
    {"id": 40, "difficulty": "medium", "question": "If a sum amounts to ₹8400 in 3 years at 8% per annum, find the principal.", "options": {"A": "₹7000", "B": "₹7200", "C": "₹7400", "D": "₹7600"}, "correct_answer": "D"},

    {"id": 41, "difficulty": "hard", "question": "A sum amounts to ₹7500 in 3 years and ₹8000 in 4 years. Find the rate.", "options": {"A": "4%", "B": "5%", "C": "6%", "D": "7%"}, "correct_answer": "A"},
    {"id": 42, "difficulty": "hard", "question": "A sum becomes 5/4 of itself in 3 years. Find the rate.", "options": {"A": "6%", "B": "7%", "C": "8%", "D": "9%"}, "correct_answer": "B"},
    {"id": 43, "difficulty": "hard", "question": "Rate of SI is 10% per annum. In how many years will SI be equal to principal?", "options": {"A": "8 years", "B": "9 years", "C": "10 years", "D": "12 years"}, "correct_answer": "C"},
    {"id": 44, "difficulty": "hard", "question": "A sum amounts to ₹15000 in 5 years at 6% per annum. Find the principal.", "options": {"A": "₹11000", "B": "₹11500", "C": "₹12000", "D": "₹12500"}, "correct_answer": "D"},
    {"id": 45, "difficulty": "hard", "question": "Difference between CI and SI for 2 years on ₹5000 at 10% is:", "options": {"A": "₹30", "B": "₹40", "C": "₹50", "D": "₹60"}, "correct_answer": "A"},
    {"id": 46, "difficulty": "hard", "question": "A sum triples in 10 years at SI. Find the rate.", "options": {"A": "15%", "B": "20%", "C": "25%", "D": "30%"}, "correct_answer": "B"},
    {"id": 47, "difficulty": "hard", "question": "A sum doubles in 8 years at SI. Find the rate.", "options": {"A": "10%", "B": "12.5%", "C": "14%", "D": "15%"}, "correct_answer": "C"},
    {"id": 48, "difficulty": "hard", "question": "A sum of ₹6000 amounts to ₹9000 in 10 years. Find the rate.", "options": {"A": "4%", "B": "5%", "C": "6%", "D": "7%"}, "correct_answer": "D"},
    {"id": 49, "difficulty": "hard", "question": "A sum amounts to 160% of itself in 5 years. Rate =", "options": {"A": "8%", "B": "10%", "C": "12%", "D": "15%"}, "correct_answer": "C"},
    {"id": 50, "difficulty": "hard", "question": "A sum gives SI of ₹480 in 3 years at 8% per annum. Find principal.", "options": {"A": "₹1500", "B": "₹1600", "C": "₹1800", "D": "₹2000"}, "correct_answer": "D"},

    {"id": 51, "difficulty": "hard", "question": "A sum becomes ₹6720 in 4 years at 12% per annum. Find principal.", "options": {"A": "₹4500", "B": "₹4800", "C": "₹5000", "D": "₹5200"}, "correct_answer": "A"},
    {"id": 52, "difficulty": "hard", "question": "At what rate will ₹4000 give SI of ₹2400 in 5 years?", "options": {"A": "10%", "B": "12%", "C": "15%", "D": "20%"}, "correct_answer": "B"},
    {"id": 53, "difficulty": "hard", "question": "A sum becomes 7/5 of itself in 4 years. Rate =", "options": {"A": "8%", "B": "10%", "C": "12%", "D": "15%"}, "correct_answer": "C"},
    {"id": 54, "difficulty": "hard", "question": "A sum of ₹9000 becomes ₹11700 in 3 years. Rate =", "options": {"A": "8%", "B": "10%", "C": "12%", "D": "15%"}, "correct_answer": "D"},
    {"id": 55, "difficulty": "hard", "question": "A sum earns SI of ₹1800 in 6 years at 10%. Principal =", "options": {"A": "₹2000", "B": "₹2500", "C": "₹3000", "D": "₹3500"}, "correct_answer": "A"},
    {"id": 56, "difficulty": "hard", "question": "₹5000 becomes ₹6500 in 5 years. Rate =", "options": {"A": "5%", "B": "6%", "C": "7%", "D": "8%"}, "correct_answer": "B"},
    {"id": 57, "difficulty": "hard", "question": "At what rate will SI be equal to 4/5 of principal in 5 years?", "options": {"A": "12%", "B": "15%", "C": "16%", "D": "18%"}, "correct_answer": "C"},
    {"id": 58, "difficulty": "hard", "question": "A sum of ₹8000 earns SI of ₹3200 in t years at 10%. Find t.", "options": {"A": "3 years", "B": "4 years", "C": "5 years", "D": "6 years"}, "correct_answer": "D"},
    {"id": 59, "difficulty": "hard", "question": "A sum increases to ₹8400 in 4 years at 5% per annum. Find principal.", "options": {"A": "₹5500", "B": "₹6000", "C": "₹6500", "D": "₹7000"}, "correct_answer": "B"},
    {"id": 60, "difficulty": "hard", "question": "In how many years will SI be 150% of principal at 12% per annum?", "options": {"A": "10 years", "B": "11 years", "C": "12.5 years", "D": "15 years"}, "correct_answer": "C"}
  ]
}