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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 964 · 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 ₹4200. It goes up by 15%. What is the new price (in ₹)?
  2. 2.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
  3. 3.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  4. 4.A shop sells 2580 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  5. 5.A water tank holds 1400 litres. 15% of the water is used. How many litres are left?
  6. 6.The price of a school bag changes from ₹3200 to ₹3840. By what percent did it go up?
  7. 7.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  8. 8.A water tank holds 4900 litres. 20% of the water is used. How many litres are left?
  9. 9.A shop sells 2240 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  10. 10.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  11. 11.The price of a bicycle is ₹2900. It goes up by 10%. What is the new price (in ₹)?
  12. 12.The price of a school bag changes from ₹4820 to ₹6266. By what percent did it go up?
  13. 13.The price of a bicycle is ₹4920. It goes up by 40%. What is the new price (in ₹)?
  14. 14.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  15. 15.The price of a bicycle is ₹3280. It goes up by 50%. What is the new price (in ₹)?
  16. 16.The price of a school bag changes from ₹3560 to ₹5340. By what percent did it go up?
  17. 17.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  18. 18.A town has 940 people. Its population grows by 5%. How many people live there now?
  19. 19.A price comes down by 50% and then comes down by 20% more. By what percent has it come down in all? =
  20. 20.The price of a bicycle is ₹4520. It goes up by 5%. What is the new price (in ₹)?
  21. 21.A town has 520 people. Its population grows by 5%. How many people live there now?
  22. 22.The price of a school bag changes from ₹4780 to ₹3585. By what percent did it come down?
  23. 23.The price of a bicycle is ₹3840. It goes up by 10%. What is the new price (in ₹)?
  24. 24.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  25. 25.A water tank holds 720 litres. 10% of the water is used. How many litres are left?
  26. 26.A town has 480 people. Its population grows by 40%. How many people live there now?
  27. 27.The price of a bicycle is ₹660. It goes up by 30%. What is the new price (in ₹)?
  28. 28.A water tank holds 2700 litres. 5% of the water is used. How many litres are left?
  29. 29.A water tank holds 3160 litres. 20% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹220 to ₹264. By what percent did it go up?
  31. 31.The price of a school bag changes from ₹2320 to ₹1624. By what percent did it come down?
  32. 32.A water tank holds 820 litres. 5% of the water is used. How many litres are left?
  33. 33.A water tank holds 520 litres. 30% of the water is used. How many litres are left?
  34. 34.A water tank holds 4140 litres. 5% of the water is used. How many litres are left?
  35. 35.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
  36. 36.The price of a bicycle is ₹4960. It goes up by 15%. What is the new price (in ₹)?
  37. 37.The price of a bicycle is ₹4680. It goes up by 25%. What is the new price (in ₹)?
  38. 38.A town has 2240 people. Its population grows by 25%. How many people live there now?
  39. 39.The price of a school bag changes from ₹4860 to ₹6804. By what percent did it go up?
  40. 40.The price of a school bag changes from ₹2300 to ₹1840. By what percent did it come down?

Answer key

  1. 4830
  2. 37
  3. 43
  4. 3612
  5. 1190
  6. 20
  7. 37.5
  8. 3920
  9. 3360
  10. 28.75
  11. 3190
  12. 30
  13. 6888
  14. 37
  15. 4920
  16. 50
  17. 52.5
  18. 987
  19. 60
  20. 4746
  21. 546
  22. 25
  23. 4224
  24. 14.5
  25. 648
  26. 672
  27. 858
  28. 2565
  29. 2528
  30. 20
  31. 30
  32. 779
  33. 364
  34. 3933
  35. 19
  36. 5704
  37. 5850
  38. 2800
  39. 40
  40. 20

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