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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 623 · 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 shop sells 4480 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  2. 2.The price of a school bag changes from ₹680 to ₹510. By what percent did it come down?
  3. 3.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  4. 4.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  5. 5.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  6. 6.A water tank holds 4540 litres. 5% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹4960 to ₹7440. By what percent did it go up?
  8. 8.A water tank holds 2420 litres. 20% of the water is used. How many litres are left?
  9. 9.The price of a school bag changes from ₹1080 to ₹864. By what percent did it come down?
  10. 10.A water tank holds 3660 litres. 15% of the water is used. How many litres are left?
  11. 11.A water tank holds 4900 litres. 5% of the water is used. How many litres are left?
  12. 12.A water tank holds 1480 litres. 40% of the water is used. How many litres are left?
  13. 13.The price of a bicycle is ₹700. It goes up by 25%. What is the new price (in ₹)?
  14. 14.The price of a school bag changes from ₹260 to ₹156. By what percent did it come down?
  15. 15.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  16. 16.A shop sells 580 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  17. 17.The price of a bicycle is ₹860. It goes up by 10%. What is the new price (in ₹)?
  18. 18.The price of a school bag changes from ₹880 to ₹660. By what percent did it come down?
  19. 19.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  20. 20.A water tank holds 3560 litres. 5% of the water is used. How many litres are left?
  21. 21.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  22. 22.A shop sells 420 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  23. 23.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  24. 24.A town has 1140 people. Its population grows by 25%. How many people live there now?
  25. 25.A water tank holds 140 litres. 25% of the water is used. How many litres are left?
  26. 26.The price of a school bag changes from ₹1260 to ₹1323. By what percent did it go up?
  27. 27.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  28. 28.A town has 2620 people. Its population grows by 20%. How many people live there now?
  29. 29.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  30. 30.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  31. 31.The price of a school bag changes from ₹4520 to ₹5650. By what percent did it go up?
  32. 32.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  33. 33.The price of a school bag changes from ₹4140 to ₹4347. By what percent did it go up?
  34. 34.A town has 3220 people. Its population grows by 10%. How many people live there now?
  35. 35.A water tank holds 3440 litres. 20% of the water is used. How many litres are left?
  36. 36.A water tank holds 3500 litres. 50% of the water is used. How many litres are left?
  37. 37.The price of a bicycle is ₹3420. It goes up by 10%. What is the new price (in ₹)?
  38. 38.The price of a bicycle is ₹1120. It goes up by 20%. What is the new price (in ₹)?
  39. 39.A town has 4900 people. Its population grows by 50%. How many people live there now?
  40. 40.A price comes down by 20% and then comes down by 15% more. By what percent has it come down in all? =

Answer key

  1. 4928
  2. 25
  3. 31.25
  4. 65
  5. 21
  6. 4313
  7. 50
  8. 1936
  9. 20
  10. 3111
  11. 4655
  12. 888
  13. 875
  14. 40
  15. 9.25
  16. 725
  17. 946
  18. 25
  19. 40.5
  20. 3382
  21. 20.75
  22. 546
  23. 32.5
  24. 1425
  25. 105
  26. 5
  27. 52.5
  28. 3144
  29. 26.5
  30. 54
  31. 25
  32. 75
  33. 5
  34. 3542
  35. 2752
  36. 1750
  37. 3762
  38. 1344
  39. 7350
  40. 32

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