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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 202 · 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.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
  2. 2.A water tank holds 3220 litres. 15% of the water is used. How many litres are left?
  3. 3.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  4. 4.A water tank holds 4560 litres. 10% of the water is used. How many litres are left?
  5. 5.A water tank holds 2980 litres. 30% of the water is used. How many litres are left?
  6. 6.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  7. 7.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  8. 8.A town has 920 people. Its population grows by 40%. How many people live there now?
  9. 9.The price of a bicycle is ₹1300. It goes up by 15%. What is the new price (in ₹)?
  10. 10.A water tank holds 1040 litres. 10% of the water is used. How many litres are left?
  11. 11.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =
  12. 12.The price of a school bag changes from ₹2580 to ₹2838. By what percent did it go up?
  13. 13.A town has 2440 people. Its population grows by 50%. How many people live there now?
  14. 14.A water tank holds 620 litres. 15% of the water is used. How many litres are left?
  15. 15.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  16. 16.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  17. 17.A shop sells 740 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  18. 18.The price of a bicycle is ₹2100. It goes up by 10%. What is the new price (in ₹)?
  19. 19.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  20. 20.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
  21. 21.The price of a school bag changes from ₹780 to ₹468. By what percent did it come down?
  22. 22.A shop sells 3080 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  23. 23.The price of a school bag changes from ₹4120 to ₹4738. By what percent did it go up?
  24. 24.The price of a bicycle is ₹720. It goes up by 15%. What is the new price (in ₹)?
  25. 25.A water tank holds 3000 litres. 50% of the water is used. How many litres are left?
  26. 26.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  27. 27.A price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
  28. 28.A shop sells 2100 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  29. 29.The price of a school bag changes from ₹3140 to ₹2669. By what percent did it come down?
  30. 30.The price of a school bag changes from ₹920 to ₹460. By what percent did it come down?
  31. 31.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
  32. 32.The price of a bicycle is ₹2880. It goes up by 10%. What is the new price (in ₹)?
  33. 33.The price of a bicycle is ₹2100. It goes up by 25%. What is the new price (in ₹)?
  34. 34.The price of a bicycle is ₹1980. It goes up by 20%. What is the new price (in ₹)?
  35. 35.The price of a school bag changes from ₹3740 to ₹4114. By what percent did it go up?
  36. 36.A water tank holds 2540 litres. 10% of the water is used. How many litres are left?
  37. 37.The price of a bicycle is ₹1360. It goes up by 50%. What is the new price (in ₹)?
  38. 38.The price of a bicycle is ₹2560. It goes up by 10%. What is the new price (in ₹)?
  39. 39.A water tank holds 1440 litres. 40% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹4100 to ₹3690. By what percent did it come down?

Answer key

  1. 69
  2. 2737
  3. 4
  4. 4104
  5. 2086
  6. 50
  7. 20.75
  8. 1288
  9. 1495
  10. 936
  11. 62.5
  12. 10
  13. 3660
  14. 527
  15. 9.25
  16. 43
  17. 814
  18. 2310
  19. 37.5
  20. 68
  21. 40
  22. 3542
  23. 15
  24. 828
  25. 1500
  26. 80
  27. 49.5
  28. 2205
  29. 15
  30. 50
  31. 56
  32. 3168
  33. 2625
  34. 2376
  35. 10
  36. 2286
  37. 2040
  38. 2816
  39. 864
  40. 10

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