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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 262 · 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 school bag changes from ₹440 to ₹308. By what percent did it come down?
  2. 2.A shop sells 4600 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  3. 3.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  4. 4.The price of a school bag changes from ₹2100 to ₹1785. By what percent did it come down?
  5. 5.A town has 260 people. Its population grows by 40%. How many people live there now?
  6. 6.The price of a bicycle is ₹2580. It goes up by 5%. What is the new price (in ₹)?
  7. 7.The price of a bicycle is ₹660. It goes up by 10%. What is the new price (in ₹)?
  8. 8.The price of a school bag changes from ₹3400 to ₹2550. By what percent did it come down?
  9. 9.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
  10. 10.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  11. 11.A water tank holds 160 litres. 15% of the water is used. How many litres are left?
  12. 12.A shop sells 2460 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  13. 13.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  14. 14.The price of a school bag changes from ₹3560 to ₹4450. By what percent did it go up?
  15. 15.The price of a school bag changes from ₹2440 to ₹1220. By what percent did it come down?
  16. 16.A water tank holds 2540 litres. 25% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹80 to ₹76. By what percent did it come down?
  18. 18.A water tank holds 1100 litres. 10% of the water is used. How many litres are left?
  19. 19.The price of a bicycle is ₹4300. It goes up by 25%. What is the new price (in ₹)?
  20. 20.The price of a school bag changes from ₹600 to ₹450. By what percent did it come down?
  21. 21.The price of a bicycle is ₹1640. It goes up by 10%. What is the new price (in ₹)?
  22. 22.The price of a bicycle is ₹2020. It goes up by 50%. What is the new price (in ₹)?
  23. 23.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
  24. 24.The price of a school bag changes from ₹4600 to ₹5060. By what percent did it go up?
  25. 25.The price of a school bag changes from ₹2300 to ₹2530. By what percent did it go up?
  26. 26.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  27. 27.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  28. 28.A shop sells 160 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  29. 29.The price of a school bag changes from ₹4040 to ₹2020. By what percent did it come down?
  30. 30.The price of a school bag changes from ₹360 to ₹180. By what percent did it come down?
  31. 31.A town has 3960 people. Its population grows by 30%. How many people live there now?
  32. 32.The price of a bicycle is ₹4620. It goes up by 50%. What is the new price (in ₹)?
  33. 33.The price of a bicycle is ₹2280. It goes up by 15%. What is the new price (in ₹)?
  34. 34.The price of a bicycle is ₹3500. It goes up by 5%. What is the new price (in ₹)?
  35. 35.The price of a school bag changes from ₹1260 to ₹1890. By what percent did it go up?
  36. 36.The price of a school bag changes from ₹3320 to ₹2656. By what percent did it come down?
  37. 37.A town has 4020 people. Its population grows by 30%. How many people live there now?
  38. 38.The price of a bicycle is ₹1960. It goes up by 50%. What is the new price (in ₹)?
  39. 39.A price comes down by 30% and then comes down by 50% more. By what percent has it come down in all? =
  40. 40.The price of a school bag changes from ₹100 to ₹95. By what percent did it come down?

Answer key

  1. 30
  2. 5520
  3. 37.5
  4. 15
  5. 364
  6. 2709
  7. 726
  8. 25
  9. 24
  10. 38
  11. 136
  12. 2829
  13. 33.5
  14. 25
  15. 50
  16. 1905
  17. 5
  18. 990
  19. 5375
  20. 25
  21. 1804
  22. 3030
  23. 44
  24. 10
  25. 10
  26. 47
  27. 5
  28. 176
  29. 50
  30. 50
  31. 5148
  32. 6930
  33. 2622
  34. 3675
  35. 50
  36. 20
  37. 5226
  38. 2940
  39. 65
  40. 5

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