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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 91 · 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 ₹4440 to ₹4218. By what percent did it come down?
  2. 2.A shop sells 1960 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  3. 3.The price of a school bag changes from ₹4400 to ₹6600. By what percent did it go up?
  4. 4.A shop sells 480 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  5. 5.The price of a school bag changes from ₹1120 to ₹784. By what percent did it come down?
  6. 6.The price of a school bag changes from ₹80 to ₹96. By what percent did it go up?
  7. 7.The price of a bicycle is ₹220. It goes up by 40%. What is the new price (in ₹)?
  8. 8.The price of a school bag changes from ₹3680 to ₹3128. By what percent did it come down?
  9. 9.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  10. 10.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
  11. 11.A water tank holds 2560 litres. 10% of the water is used. How many litres are left?
  12. 12.A town has 500 people. Its population grows by 15%. How many people live there now?
  13. 13.A water tank holds 1580 litres. 10% of the water is used. How many litres are left?
  14. 14.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  15. 15.A water tank holds 2240 litres. 15% of the water is used. How many litres are left?
  16. 16.The price of a school bag changes from ₹1180 to ₹1357. By what percent did it go up?
  17. 17.The price of a school bag changes from ₹2220 to ₹3108. By what percent did it go up?
  18. 18.The price of a bicycle is ₹1620. It goes up by 20%. What is the new price (in ₹)?
  19. 19.A water tank holds 3220 litres. 5% of the water is used. How many litres are left?
  20. 20.A water tank holds 880 litres. 20% of the water is used. How many litres are left?
  21. 21.A shop sells 3540 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  22. 22.A town has 3700 people. Its population grows by 15%. How many people live there now?
  23. 23.The price of a school bag changes from ₹3100 to ₹3720. By what percent did it go up?
  24. 24.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  25. 25.The price of a school bag changes from ₹3320 to ₹2988. By what percent did it come down?
  26. 26.The price of a bicycle is ₹4100. It goes up by 10%. What is the new price (in ₹)?
  27. 27.A town has 4840 people. Its population grows by 20%. How many people live there now?
  28. 28.The price of a school bag changes from ₹400 to ₹280. By what percent did it come down?
  29. 29.A shop sells 2600 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  30. 30.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  31. 31.A shop sells 1580 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  32. 32.A shop sells 4400 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  33. 33.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  34. 34.A town has 4840 people. Its population grows by 25%. How many people live there now?
  35. 35.The price of a bicycle is ₹2400. It goes up by 50%. What is the new price (in ₹)?
  36. 36.A water tank holds 3780 litres. 50% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹1520 to ₹1748. By what percent did it go up?
  38. 38.A water tank holds 580 litres. 30% of the water is used. How many litres are left?
  39. 39.A water tank holds 880 litres. 25% of the water is used. How many litres are left?
  40. 40.A shop sells 660 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?

Answer key

  1. 5
  2. 2548
  3. 50
  4. 720
  5. 30
  6. 20
  7. 308
  8. 15
  9. 46
  10. 68
  11. 2304
  12. 575
  13. 1422
  14. 40.5
  15. 1904
  16. 15
  17. 40
  18. 1944
  19. 3059
  20. 704
  21. 4071
  22. 4255
  23. 20
  24. 82
  25. 10
  26. 4510
  27. 5808
  28. 30
  29. 2730
  30. 72.5
  31. 1975
  32. 4620
  33. 75
  34. 6050
  35. 3600
  36. 1890
  37. 15
  38. 406
  39. 660
  40. 858

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