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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 735 · 40 questions
TalentJR

The method (Start value is 100%): New value after a rise of p%: value + p% of value. After a fall: value − p% of value. Percent change = change ÷ starting value × 100. Two changes a% and b% one after the other: a + b + (a × b) ÷ 100, with a fall counted as minus.

NameDateTime takenScore ___ / 40
  1. 1.The price of a school bag changes from ₹3580 to ₹3759. By what percent did it go up?
  2. 2.The price of a school bag changes from ₹4960 to ₹4464. By what percent did it come down?
  3. 3.A water tank holds 1060 litres. 25% of the water is used. How many litres are left?
  4. 4.A water tank holds 2480 litres. 20% of the water is used. How many litres are left?
  5. 5.The price of a bicycle is ₹3720. It goes up by 5%. What is the new price (in ₹)?
  6. 6.The price of a school bag changes from ₹1680 to ₹2520. By what percent did it go up?
  7. 7.A water tank holds 3320 litres. 20% of the water is used. How many litres are left?
  8. 8.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
  9. 9.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
  10. 10.A town has 1760 people. Its population grows by 40%. How many people live there now?
  11. 11.A water tank holds 1040 litres. 10% of the water is used. How many litres are left?
  12. 12.A shop sells 940 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  13. 13.A water tank holds 1960 litres. 25% of the water is used. How many litres are left?
  14. 14.A water tank holds 4380 litres. 10% of the water is used. How many litres are left?
  15. 15.A price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
  16. 16.The price of a bicycle is ₹260. It goes up by 10%. What is the new price (in ₹)?
  17. 17.A price comes down by 25% and then comes down by 25% more. By what percent has it come down in all? =
  18. 18.The price of a school bag changes from ₹1380 to ₹966. By what percent did it come down?
  19. 19.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  20. 20.A water tank holds 4840 litres. 30% of the water is used. How many litres are left?
  21. 21.A price goes up by 20% and then comes down by 10%. By what percent has it gone up in all? =
  22. 22.The price of a school bag changes from ₹1320 to ₹1980. By what percent did it go up?
  23. 23.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  24. 24.The price of a school bag changes from ₹3760 to ₹5264. By what percent did it go up?
  25. 25.The price of a school bag changes from ₹2660 to ₹3192. By what percent did it go up?
  26. 26.A shop sells 1580 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  27. 27.A shop sells 4960 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  28. 28.The price of a bicycle is ₹220. It goes up by 30%. What is the new price (in ₹)?
  29. 29.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  30. 30.A water tank holds 2660 litres. 5% of the water is used. How many litres are left?
  31. 31.A shop sells 1460 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  32. 32.A water tank holds 620 litres. 25% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹280 to ₹196. By what percent did it come down?
  34. 34.A water tank holds 1780 litres. 25% of the water is used. How many litres are left?
  35. 35.A shop sells 2300 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  36. 36.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  37. 37.A water tank holds 820 litres. 5% of the water is used. How many litres are left?
  38. 38.A water tank holds 1480 litres. 30% of the water is used. How many litres are left?
  39. 39.A water tank holds 300 litres. 10% of the water is used. How many litres are left?
  40. 40.The price of a bicycle is ₹1640. It goes up by 50%. What is the new price (in ₹)?

Answer key

  1. 5
  2. 10
  3. 795
  4. 1984
  5. 3906
  6. 50
  7. 2656
  8. 14.5
  9. 47
  10. 2464
  11. 936
  12. 1222
  13. 1470
  14. 3942
  15. 49.5
  16. 286
  17. 43.75
  18. 30
  19. 58
  20. 3388
  21. 8
  22. 50
  23. 20
  24. 40
  25. 20
  26. 1659
  27. 5952
  28. 286
  29. 87.5
  30. 2527
  31. 1825
  32. 465
  33. 30
  34. 1335
  35. 2415
  36. 47
  37. 779
  38. 1036
  39. 270
  40. 2460

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