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Class 7 Maths Worksheet: Profit and Loss, Simple Interest

Maths worksheets lesson 54: Comparing quantities: percentage, profit and loss, simple interest · Set 479 · 40 sums
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The method (Out of 100): p% of a number = number × p ÷ 100. Profit = SP − CP; loss = CP − SP. Profit % (or loss %) = profit (or loss) ÷ CP × 100. Selling price at p% profit = CP + p% of CP; at p% loss = CP − p% of CP. Simple interest = P × R × T ÷ 100; amount = P + SI. % increase or decrease = change ÷ old value × 100.

NameDateTime takenScore ___ / 40
  1. 1.A mobile phone costs ₹1300. It is sold at a 30% profit. What is the selling price (in ₹)?
  2. 2.The price of a school bag changed from ₹400 to ₹392. What is the percentage decrease?
  3. 3.A table costs ₹2800. It is sold at a 15% loss. What is the selling price (in ₹)?
  4. 4.What is 65% of 420?
  5. 5.What is the simple interest on ₹500 at 3% per year for 1 year (in ₹)?
  6. 6.What is 25% of 140?
  7. 7.A watch bought for ₹1900 is sold for ₹1425. What is the loss per cent?
  8. 8.A cricket kit bought for ₹3400 is sold for ₹4420. What is the profit per cent?
  9. 9.What is 5% of 140?
  10. 10.A watch costs ₹500. It is sold at a 5% profit. What is the selling price (in ₹)?
  11. 11.A shopkeeper buys a cycle for ₹1600 and sells it for ₹1810. What is the profit (in ₹)?
  12. 12.What is 75% of 820?
  13. 13.What is the simple interest on ₹9600 at 7% per year for 3 years (in ₹)?
  14. 14.What is the simple interest on ₹8700 at 3% per year for 5 years (in ₹)?
  15. 15.What is the simple interest on ₹5600 at 4% per year for 3 years (in ₹)?
  16. 16.What is 70% of 680?
  17. 17.A sewing machine costs ₹500. It is sold at a 40% profit. What is the selling price (in ₹)?
  18. 18.A sewing machine costs ₹2100. It is sold at a 10% profit. What is the selling price (in ₹)?
  19. 19.The price of a bus pass changed from ₹50 to ₹5. What is the percentage decrease?
  20. 20.A shopkeeper buys a mobile phone for ₹2700 and sells it for ₹2970. What is the profit (in ₹)?
  21. 21.What is the simple interest on ₹9100 at 3% per year for 5 years (in ₹)?
  22. 22.A shopkeeper buys a watch for ₹1000 and sells it for ₹1120. What is the profit (in ₹)?
  23. 23.What is 60% of 60?
  24. 24.What is 20% of 700?
  25. 25.The price of a cricket ball changed from ₹400 to ₹408. What is the percentage increase?
  26. 26.The price of a water bottle changed from ₹80 to ₹84. What is the percentage increase?
  27. 27.What is 45% of 920?
  28. 28.What is the amount (principal + simple interest) on ₹7300 at 10% per year for 3 years (in ₹)?
  29. 29.A sewing machine costs ₹600. It is sold at a 25% profit. What is the selling price (in ₹)?
  30. 30.What is the amount (principal + simple interest) on ₹7000 at 5% per year for 1 year (in ₹)?
  31. 31.What is 10% of 760?
  32. 32.The price of a school bag changed from ₹250 to ₹225. What is the percentage decrease?
  33. 33.The price of a box of mangoes changed from ₹50 to ₹35. What is the percentage decrease?
  34. 34.What is 40% of 920?
  35. 35.What is the simple interest on ₹3600 at 12% per year for 1 year (in ₹)?
  36. 36.What is 15% of 840?
  37. 37.What is the simple interest on ₹7700 at 12% per year for 3 years (in ₹)?
  38. 38.The price of a water bottle changed from ₹80 to ₹140. What is the percentage increase?
  39. 39.A watch bought for ₹200 is sold for ₹220. What is the profit per cent?
  40. 40.A cycle bought for ₹1000 is sold for ₹900. What is the loss per cent?

Answer key

  1. 1690
  2. 2
  3. 2380
  4. 273
  5. 15
  6. 35
  7. 25
  8. 30
  9. 7
  10. 525
  11. 210
  12. 615
  13. 2016
  14. 1305
  15. 672
  16. 476
  17. 700
  18. 2310
  19. 90
  20. 270
  21. 1365
  22. 120
  23. 36
  24. 140
  25. 2
  26. 5
  27. 414
  28. 9490
  29. 750
  30. 7350
  31. 76
  32. 10
  33. 30
  34. 368
  35. 432
  36. 126
  37. 2772
  38. 75
  39. 10
  40. 10

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