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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 937 · 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 ₹80 to ₹72. By what percent did it come down?
  2. 2.A water tank holds 2480 litres. 15% of the water is used. How many litres are left?
  3. 3.A shop sells 3940 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  4. 4.The price of a bicycle is ₹3260. It goes up by 25%. What is the new price (in ₹)?
  5. 5.A shop sells 1820 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  6. 6.A price comes down by 15% and then comes down by 25% more. By what percent has it come down in all? =
  7. 7.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  8. 8.A water tank holds 3200 litres. 15% of the water is used. How many litres are left?
  9. 9.The price of a school bag changes from ₹1440 to ₹1728. By what percent did it go up?
  10. 10.A water tank holds 2680 litres. 5% of the water is used. How many litres are left?
  11. 11.A shop sells 3220 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  12. 12.A water tank holds 4980 litres. 10% of the water is used. How many litres are left?
  13. 13.A water tank holds 1700 litres. 10% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹600 to ₹660. By what percent did it go up?
  15. 15.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  16. 16.The price of a school bag changes from ₹2900 to ₹4060. By what percent did it go up?
  17. 17.The price of a school bag changes from ₹2680 to ₹4020. By what percent did it go up?
  18. 18.The price of a bicycle is ₹2300. It goes up by 30%. What is the new price (in ₹)?
  19. 19.The price of a bicycle is ₹3500. It goes up by 5%. What is the new price (in ₹)?
  20. 20.A water tank holds 3340 litres. 50% of the water is used. How many litres are left?
  21. 21.The price of a school bag changes from ₹900 to ₹1035. By what percent did it go up?
  22. 22.The price of a school bag changes from ₹2500 to ₹1500. By what percent did it come down?
  23. 23.The price of a bicycle is ₹3500. It goes up by 10%. What is the new price (in ₹)?
  24. 24.The price of a school bag changes from ₹200 to ₹300. By what percent did it go up?
  25. 25.A shop sells 1200 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  26. 26.The price of a bicycle is ₹480. It goes up by 30%. What is the new price (in ₹)?
  27. 27.The price of a bicycle is ₹620. It goes up by 15%. What is the new price (in ₹)?
  28. 28.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  29. 29.A water tank holds 480 litres. 50% of the water is used. How many litres are left?
  30. 30.The price of a bicycle is ₹2200. It goes up by 10%. What is the new price (in ₹)?
  31. 31.The price of a school bag changes from ₹680 to ₹850. By what percent did it go up?
  32. 32.The price of a bicycle is ₹460. It goes up by 50%. What is the new price (in ₹)?
  33. 33.A water tank holds 3080 litres. 10% of the water is used. How many litres are left?
  34. 34.A water tank holds 880 litres. 5% of the water is used. How many litres are left?
  35. 35.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  36. 36.A shop sells 1400 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  37. 37.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  38. 38.The price of a school bag changes from ₹2380 to ₹1428. By what percent did it come down?
  39. 39.The price of a bicycle is ₹1680. It goes up by 50%. What is the new price (in ₹)?
  40. 40.A shop sells 1080 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?

Answer key

  1. 10
  2. 2108
  3. 4334
  4. 4075
  5. 1911
  6. 36.25
  7. 80
  8. 2720
  9. 20
  10. 2546
  11. 3864
  12. 4482
  13. 1530
  14. 10
  15. 49.5
  16. 40
  17. 50
  18. 2990
  19. 3675
  20. 1670
  21. 15
  22. 40
  23. 3850
  24. 50
  25. 1380
  26. 624
  27. 713
  28. 61
  29. 240
  30. 2420
  31. 25
  32. 690
  33. 2772
  34. 836
  35. 19.25
  36. 2100
  37. 47.5
  38. 40
  39. 2520
  40. 1296

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