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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 156 · 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 ₹2720 to ₹2312. By what percent did it come down?
  2. 2.The price of a school bag changes from ₹1460 to ₹876. By what percent did it come down?
  3. 3.A water tank holds 660 litres. 5% of the water is used. How many litres are left?
  4. 4.A shop sells 560 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  5. 5.A town has 3880 people. Its population grows by 5%. How many people live there now?
  6. 6.A town has 3880 people. Its population grows by 20%. How many people live there now?
  7. 7.A town has 500 people. Its population grows by 10%. How many people live there now?
  8. 8.A shop sells 1680 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  9. 9.The price of a bicycle is ₹3860. It goes up by 50%. What is the new price (in ₹)?
  10. 10.The price of a school bag changes from ₹1580 to ₹1501. By what percent did it come down?
  11. 11.The price of a bicycle is ₹480. It goes up by 40%. What is the new price (in ₹)?
  12. 12.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  13. 13.A town has 2140 people. Its population grows by 50%. How many people live there now?
  14. 14.The price of a school bag changes from ₹4900 to ₹6370. By what percent did it go up?
  15. 15.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
  16. 16.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =
  17. 17.The price of a bicycle is ₹2660. It goes up by 15%. What is the new price (in ₹)?
  18. 18.A water tank holds 3920 litres. 20% of the water is used. How many litres are left?
  19. 19.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  20. 20.The price of a bicycle is ₹4840. It goes up by 25%. What is the new price (in ₹)?
  21. 21.A water tank holds 800 litres. 50% of the water is used. How many litres are left?
  22. 22.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  23. 23.The price of a school bag changes from ₹4540 to ₹4313. By what percent did it come down?
  24. 24.A water tank holds 3900 litres. 25% of the water is used. How many litres are left?
  25. 25.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  26. 26.A water tank holds 1740 litres. 15% of the water is used. How many litres are left?
  27. 27.A water tank holds 3140 litres. 25% of the water is used. How many litres are left?
  28. 28.A water tank holds 4280 litres. 20% of the water is used. How many litres are left?
  29. 29.A water tank holds 2600 litres. 40% of the water is used. How many litres are left?
  30. 30.A shop sells 100 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  31. 31.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  32. 32.The price of a school bag changes from ₹2600 to ₹1950. By what percent did it come down?
  33. 33.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  34. 34.A shop sells 4580 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  35. 35.The price of a school bag changes from ₹1060 to ₹954. By what percent did it come down?
  36. 36.The price of a school bag changes from ₹4780 to ₹2868. By what percent did it come down?
  37. 37.The price of a school bag changes from ₹340 to ₹204. By what percent did it come down?
  38. 38.The price of a school bag changes from ₹3120 to ₹3900. By what percent did it go up?
  39. 39.A water tank holds 2940 litres. 15% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹220 to ₹198. By what percent did it come down?

Answer key

  1. 15
  2. 40
  3. 627
  4. 728
  5. 4074
  6. 4656
  7. 550
  8. 2016
  9. 5790
  10. 5
  11. 672
  12. 37
  13. 3210
  14. 30
  15. 47
  16. 62.5
  17. 3059
  18. 3136
  19. 32.5
  20. 6050
  21. 400
  22. 54
  23. 5
  24. 2925
  25. 19
  26. 1479
  27. 2355
  28. 3424
  29. 1560
  30. 125
  31. 28.75
  32. 25
  33. 20.75
  34. 5954
  35. 10
  36. 40
  37. 40
  38. 25
  39. 2499
  40. 10

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