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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 408 · 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 ₹900 to ₹945. By what percent did it go up?
  2. 2.A shop sells 2040 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  3. 3.The price of a school bag changes from ₹4900 to ₹6125. By what percent did it go up?
  4. 4.The price of a bicycle is ₹3800. It goes up by 40%. What is the new price (in ₹)?
  5. 5.The price of a bicycle is ₹820. It goes up by 25%. What is the new price (in ₹)?
  6. 6.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
  7. 7.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
  8. 8.The price of a school bag changes from ₹3260 to ₹2934. By what percent did it come down?
  9. 9.A water tank holds 4000 litres. 40% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹1100 to ₹1210. By what percent did it go up?
  11. 11.A water tank holds 2060 litres. 30% of the water is used. How many litres are left?
  12. 12.A town has 3080 people. Its population grows by 40%. How many people live there now?
  13. 13.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  14. 14.A water tank holds 2380 litres. 15% of the water is used. How many litres are left?
  15. 15.The price of a bicycle is ₹2760. It goes up by 50%. What is the new price (in ₹)?
  16. 16.The price of a school bag changes from ₹3200 to ₹4000. By what percent did it go up?
  17. 17.The price of a bicycle is ₹3260. It goes up by 25%. What is the new price (in ₹)?
  18. 18.The price of a bicycle is ₹60. It goes up by 20%. What is the new price (in ₹)?
  19. 19.The price of a school bag changes from ₹1340 to ₹1139. By what percent did it come down?
  20. 20.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
  21. 21.The price of a bicycle is ₹3640. It goes up by 50%. What is the new price (in ₹)?
  22. 22.A shop sells 2920 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  23. 23.A shop sells 2860 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  24. 24.A shop sells 2680 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  25. 25.The price of a school bag changes from ₹1440 to ₹1512. By what percent did it go up?
  26. 26.The price of a school bag changes from ₹4740 to ₹3318. By what percent did it come down?
  27. 27.The price of a school bag changes from ₹2920 to ₹2628. By what percent did it come down?
  28. 28.A shop sells 2940 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  29. 29.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  30. 30.The price of a bicycle is ₹4480. It goes up by 15%. What is the new price (in ₹)?
  31. 31.A shop sells 940 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  32. 32.The price of a school bag changes from ₹4120 to ₹3708. By what percent did it come down?
  33. 33.A water tank holds 1520 litres. 15% of the water is used. How many litres are left?
  34. 34.The price of a bicycle is ₹2240. It goes up by 5%. What is the new price (in ₹)?
  35. 35.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  36. 36.The price of a school bag changes from ₹1080 to ₹1026. By what percent did it come down?
  37. 37.The price of a school bag changes from ₹4080 to ₹6120. By what percent did it go up?
  38. 38.The price of a bicycle is ₹1540. It goes up by 40%. What is the new price (in ₹)?
  39. 39.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  40. 40.A town has 1580 people. Its population grows by 20%. How many people live there now?

Answer key

  1. 5
  2. 2244
  3. 25
  4. 5320
  5. 1025
  6. 28.75
  7. 40.5
  8. 10
  9. 2400
  10. 10
  11. 1442
  12. 4312
  13. 52.5
  14. 2023
  15. 4140
  16. 25
  17. 4075
  18. 72
  19. 15
  20. 96
  21. 5460
  22. 3066
  23. 3575
  24. 2814
  25. 5
  26. 30
  27. 10
  28. 3381
  29. 32
  30. 5152
  31. 1410
  32. 10
  33. 1292
  34. 2352
  35. 26.5
  36. 5
  37. 50
  38. 2156
  39. 61
  40. 1896

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