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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 56 · 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 comes down by 25% and then comes down by 20% more. By what percent has it come down in all? =
  2. 2.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
  3. 3.A shop sells 960 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  4. 4.The price of a school bag changes from ₹2700 to ₹2025. By what percent did it come down?
  5. 5.A water tank holds 4060 litres. 15% of the water is used. How many litres are left?
  6. 6.The price of a bicycle is ₹2460. It goes up by 10%. What is the new price (in ₹)?
  7. 7.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  8. 8.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  9. 9.The price of a school bag changes from ₹4200 to ₹3570. By what percent did it come down?
  10. 10.A water tank holds 1260 litres. 20% of the water is used. How many litres are left?
  11. 11.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  12. 12.The price of a bicycle is ₹2320. It goes up by 10%. What is the new price (in ₹)?
  13. 13.A shop sells 4140 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  14. 14.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
  15. 15.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  16. 16.A water tank holds 2380 litres. 5% of the water is used. How many litres are left?
  17. 17.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
  18. 18.The price of a school bag changes from ₹2460 to ₹3198. By what percent did it go up?
  19. 19.A shop sells 1360 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  20. 20.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
  21. 21.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  22. 22.The price of a bicycle is ₹880. It goes up by 10%. What is the new price (in ₹)?
  23. 23.The price of a school bag changes from ₹840 to ₹1008. By what percent did it go up?
  24. 24.A shop sells 1300 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  25. 25.The price of a school bag changes from ₹280 to ₹196. By what percent did it come down?
  26. 26.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
  27. 27.A town has 4120 people. Its population grows by 5%. How many people live there now?
  28. 28.The price of a bicycle is ₹2040. It goes up by 15%. What is the new price (in ₹)?
  29. 29.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  30. 30.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  31. 31.A water tank holds 1120 litres. 25% of the water is used. How many litres are left?
  32. 32.A town has 2060 people. Its population grows by 10%. How many people live there now?
  33. 33.The price of a school bag changes from ₹4820 to ₹4579. By what percent did it come down?
  34. 34.A water tank holds 3740 litres. 50% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹460 to ₹368. By what percent did it come down?
  36. 36.A town has 3880 people. Its population grows by 15%. How many people live there now?
  37. 37.A shop sells 2080 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  38. 38.The price of a school bag changes from ₹3880 to ₹2328. By what percent did it come down?
  39. 39.A town has 640 people. Its population grows by 30%. How many people live there now?
  40. 40.A water tank holds 3640 litres. 40% of the water is used. How many litres are left?

Answer key

  1. 40
  2. 62.5
  3. 1440
  4. 25
  5. 3451
  6. 2706
  7. 47
  8. 82
  9. 15
  10. 1008
  11. 20.75
  12. 2552
  13. 4347
  14. 37
  15. 9.75
  16. 2261
  17. 55
  18. 30
  19. 1768
  20. 28.75
  21. 26.5
  22. 968
  23. 20
  24. 1495
  25. 30
  26. 14.5
  27. 4326
  28. 2346
  29. 26
  30. 57.5
  31. 840
  32. 2266
  33. 5
  34. 1870
  35. 20
  36. 4462
  37. 2288
  38. 40
  39. 832
  40. 2184

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