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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 925 · 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 water tank holds 3960 litres. 5% of the water is used. How many litres are left?
  2. 2.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  3. 3.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
  4. 4.The price of a school bag changes from ₹3440 to ₹4300. By what percent did it go up?
  5. 5.The price of a bicycle is ₹4120. It goes up by 40%. What is the new price (in ₹)?
  6. 6.The price of a school bag changes from ₹4640 to ₹6496. By what percent did it go up?
  7. 7.The price of a bicycle is ₹200. It goes up by 10%. What is the new price (in ₹)?
  8. 8.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  9. 9.The price of a school bag changes from ₹3600 to ₹4140. By what percent did it go up?
  10. 10.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  11. 11.The price of a bicycle is ₹2120. It goes up by 30%. What is the new price (in ₹)?
  12. 12.A shop sells 2620 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  13. 13.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =
  14. 14.The price of a school bag changes from ₹980 to ₹1029. By what percent did it go up?
  15. 15.The price of a school bag changes from ₹1980 to ₹2376. By what percent did it go up?
  16. 16.A shop sells 1920 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  17. 17.A shop sells 2940 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 ₹4980. It goes up by 50%. What is the new price (in ₹)?
  19. 19.The price of a school bag changes from ₹4080 to ₹5100. By what percent did it go up?
  20. 20.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  21. 21.A water tank holds 4900 litres. 40% of the water is used. How many litres are left?
  22. 22.A water tank holds 4720 litres. 40% of the water is used. How many litres are left?
  23. 23.A shop sells 580 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  24. 24.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  25. 25.The price of a school bag changes from ₹2280 to ₹3192. By what percent did it go up?
  26. 26.The price of a school bag changes from ₹4080 to ₹2448. By what percent did it come down?
  27. 27.A town has 3000 people. Its population grows by 50%. How many people live there now?
  28. 28.The price of a school bag changes from ₹400 to ₹320. By what percent did it come down?
  29. 29.A water tank holds 700 litres. 5% of the water is used. How many litres are left?
  30. 30.A water tank holds 900 litres. 20% of the water is used. How many litres are left?
  31. 31.The price of a school bag changes from ₹1340 to ₹1675. By what percent did it go up?
  32. 32.A price comes down by 25% and then comes down by 25% more. By what percent has it come down in all? =
  33. 33.A water tank holds 1060 litres. 10% of the water is used. How many litres are left?
  34. 34.The price of a school bag changes from ₹1040 to ₹1092. By what percent did it go up?
  35. 35.The price of a school bag changes from ₹1920 to ₹2016. By what percent did it go up?
  36. 36.The price of a school bag changes from ₹1420 to ₹1207. By what percent did it come down?
  37. 37.The price of a bicycle is ₹3280. It goes up by 5%. What is the new price (in ₹)?
  38. 38.A town has 2120 people. Its population grows by 30%. How many people live there now?
  39. 39.The price of a school bag changes from ₹1220 to ₹610. By what percent did it come down?
  40. 40.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =

Answer key

  1. 3762
  2. 52
  3. 65
  4. 25
  5. 5768
  6. 40
  7. 220
  8. 15.5
  9. 15
  10. 43
  11. 2756
  12. 3275
  13. 62.5
  14. 5
  15. 20
  16. 2400
  17. 3234
  18. 7470
  19. 25
  20. 82
  21. 2940
  22. 2832
  23. 667
  24. 17
  25. 40
  26. 40
  27. 4500
  28. 20
  29. 665
  30. 720
  31. 25
  32. 43.75
  33. 954
  34. 5
  35. 5
  36. 15
  37. 3444
  38. 2756
  39. 50
  40. 75

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