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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 777 · 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 20% and then goes up by 10% more. By what percent has it gone up in all? =
  2. 2.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  3. 3.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  4. 4.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
  5. 5.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
  6. 6.A water tank holds 640 litres. 25% of the water is used. How many litres are left?
  7. 7.The price of a bicycle is ₹4740. It goes up by 5%. What is the new price (in ₹)?
  8. 8.A water tank holds 4980 litres. 20% of the water is used. How many litres are left?
  9. 9.A water tank holds 2480 litres. 40% of the water is used. How many litres are left?
  10. 10.The price of a bicycle is ₹4720. It goes up by 10%. What is the new price (in ₹)?
  11. 11.The price of a bicycle is ₹1260. It goes up by 10%. What is the new price (in ₹)?
  12. 12.The price of a school bag changes from ₹2960 to ₹1776. By what percent did it come down?
  13. 13.A water tank holds 1420 litres. 5% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹3060 to ₹3672. By what percent did it go up?
  15. 15.The price of a school bag changes from ₹440 to ₹330. By what percent did it come down?
  16. 16.The price of a bicycle is ₹4520. It goes up by 30%. What is the new price (in ₹)?
  17. 17.A water tank holds 1160 litres. 5% of the water is used. How many litres are left?
  18. 18.A water tank holds 1320 litres. 40% of the water is used. How many litres are left?
  19. 19.A water tank holds 4200 litres. 10% of the water is used. How many litres are left?
  20. 20.A water tank holds 3460 litres. 25% of the water is used. How many litres are left?
  21. 21.The price of a school bag changes from ₹3080 to ₹2464. By what percent did it come down?
  22. 22.A water tank holds 3360 litres. 5% of the water is used. How many litres are left?
  23. 23.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  24. 24.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  25. 25.A water tank holds 980 litres. 40% of the water is used. How many litres are left?
  26. 26.The price of a bicycle is ₹920. It goes up by 25%. What is the new price (in ₹)?
  27. 27.The price of a bicycle is ₹3160. It goes up by 15%. What is the new price (in ₹)?
  28. 28.The price of a bicycle is ₹3440. It goes up by 10%. What is the new price (in ₹)?
  29. 29.The price of a school bag changes from ₹4200 to ₹5460. By what percent did it go up?
  30. 30.The price of a bicycle is ₹2560. It goes up by 20%. What is the new price (in ₹)?
  31. 31.A water tank holds 3300 litres. 5% of the water is used. How many litres are left?
  32. 32.A water tank holds 3920 litres. 5% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹240 to ₹168. By what percent did it come down?
  34. 34.The price of a school bag changes from ₹620 to ₹558. By what percent did it come down?
  35. 35.A water tank holds 540 litres. 50% of the water is used. How many litres are left?
  36. 36.A town has 4800 people. Its population grows by 20%. How many people live there now?
  37. 37.The price of a school bag changes from ₹4360 to ₹6104. By what percent did it go up?
  38. 38.The price of a school bag changes from ₹3960 to ₹4752. By what percent did it go up?
  39. 39.The price of a school bag changes from ₹1080 to ₹918. By what percent did it come down?
  40. 40.The price of a bicycle is ₹3740. It goes up by 20%. What is the new price (in ₹)?

Answer key

  1. 32
  2. 43
  3. 57.5
  4. 24
  5. 28.75
  6. 480
  7. 4977
  8. 3984
  9. 1488
  10. 5192
  11. 1386
  12. 40
  13. 1349
  14. 20
  15. 25
  16. 5876
  17. 1102
  18. 792
  19. 3780
  20. 2595
  21. 20
  22. 3192
  23. 95
  24. 54
  25. 588
  26. 1150
  27. 3634
  28. 3784
  29. 30
  30. 3072
  31. 3135
  32. 3724
  33. 30
  34. 10
  35. 270
  36. 5760
  37. 40
  38. 20
  39. 15
  40. 4488

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