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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 537 · 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 bicycle is ₹460. It goes up by 25%. What is the new price (in ₹)?
  2. 2.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  3. 3.A water tank holds 640 litres. 15% of the water is used. How many litres are left?
  4. 4.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  5. 5.The price of a bicycle is ₹4420. It goes up by 30%. What is the new price (in ₹)?
  6. 6.The price of a bicycle is ₹2600. It goes up by 20%. What is the new price (in ₹)?
  7. 7.The price of a bicycle is ₹4740. It goes up by 5%. What is the new price (in ₹)?
  8. 8.The price of a school bag changes from ₹600 to ₹480. By what percent did it come down?
  9. 9.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
  10. 10.A water tank holds 2840 litres. 5% of the water is used. How many litres are left?
  11. 11.A water tank holds 4700 litres. 20% of the water is used. How many litres are left?
  12. 12.The price of a school bag changes from ₹3800 to ₹3420. By what percent did it come down?
  13. 13.A water tank holds 1120 litres. 20% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹3460 to ₹4498. By what percent did it go up?
  15. 15.A water tank holds 1280 litres. 25% of the water is used. How many litres are left?
  16. 16.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  17. 17.A water tank holds 960 litres. 10% of the water is used. How many litres are left?
  18. 18.A water tank holds 520 litres. 50% of the water is used. How many litres are left?
  19. 19.A water tank holds 280 litres. 25% of the water is used. How many litres are left?
  20. 20.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  21. 21.The price of a school bag changes from ₹3700 to ₹4625. By what percent did it go up?
  22. 22.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  23. 23.A price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
  24. 24.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  25. 25.The price of a bicycle is ₹960. It goes up by 10%. What is the new price (in ₹)?
  26. 26.The price of a bicycle is ₹3280. It goes up by 25%. What is the new price (in ₹)?
  27. 27.The price of a school bag changes from ₹1220 to ₹1159. By what percent did it come down?
  28. 28.A town has 460 people. Its population grows by 5%. How many people live there now?
  29. 29.The price of a school bag changes from ₹1760 to ₹2112. By what percent did it go up?
  30. 30.The price of a bicycle is ₹4860. It goes up by 30%. What is the new price (in ₹)?
  31. 31.A town has 3680 people. Its population grows by 40%. How many people live there now?
  32. 32.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
  33. 33.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =
  34. 34.A price goes up by 25% and then comes down by 15%. By what percent has it gone up in all? =
  35. 35.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  36. 36.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
  37. 37.The price of a school bag changes from ₹2260 to ₹2373. By what percent did it go up?
  38. 38.A price comes down by 50% and then comes down by 20% more. By what percent has it come down in all? =
  39. 39.The price of a bicycle is ₹3540. It goes up by 40%. What is the new price (in ₹)?
  40. 40.The price of a school bag changes from ₹380 to ₹323. By what percent did it come down?

Answer key

  1. 575
  2. 32.5
  3. 544
  4. 26.5
  5. 5746
  6. 3120
  7. 4977
  8. 20
  9. 68
  10. 2698
  11. 3760
  12. 10
  13. 896
  14. 30
  15. 960
  16. 4.5
  17. 864
  18. 260
  19. 210
  20. 14.5
  21. 25
  22. 27.5
  23. 49.5
  24. 32.25
  25. 1056
  26. 4100
  27. 5
  28. 483
  29. 20
  30. 6318
  31. 5152
  32. 56
  33. 62.5
  34. 6.25
  35. 36.5
  36. 24
  37. 5
  38. 60
  39. 4956
  40. 15

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