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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 895 · 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 ₹2300 to ₹1840. By what percent did it come down?
  2. 2.The price of a bicycle is ₹780. It goes up by 50%. What is the new price (in ₹)?
  3. 3.A water tank holds 380 litres. 25% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹180 to ₹108. By what percent did it come down?
  5. 5.A water tank holds 1580 litres. 25% of the water is used. How many litres are left?
  6. 6.The price of a school bag changes from ₹60 to ₹75. By what percent did it go up?
  7. 7.The price of a bicycle is ₹4240. It goes up by 30%. What is the new price (in ₹)?
  8. 8.The price of a bicycle is ₹4600. It goes up by 5%. What is the new price (in ₹)?
  9. 9.A water tank holds 720 litres. 50% of the water is used. How many litres are left?
  10. 10.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  11. 11.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  12. 12.A water tank holds 780 litres. 20% of the water is used. How many litres are left?
  13. 13.A water tank holds 1120 litres. 25% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹980 to ₹490. By what percent did it come down?
  15. 15.A shop sells 3280 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  16. 16.The price of a bicycle is ₹2160. It goes up by 25%. What is the new price (in ₹)?
  17. 17.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  18. 18.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  19. 19.The price of a school bag changes from ₹3720 to ₹3348. By what percent did it come down?
  20. 20.A price comes down by 40% and then comes down by 40% more. By what percent has it come down in all? =
  21. 21.A shop sells 1180 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  22. 22.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  23. 23.The price of a bicycle is ₹3360. It goes up by 25%. What is the new price (in ₹)?
  24. 24.A water tank holds 1260 litres. 50% of the water is used. How many litres are left?
  25. 25.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  26. 26.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  27. 27.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  28. 28.The price of a bicycle is ₹4940. It goes up by 40%. What is the new price (in ₹)?
  29. 29.A shop sells 540 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  30. 30.A water tank holds 1800 litres. 15% of the water is used. How many litres are left?
  31. 31.The price of a school bag changes from ₹2760 to ₹1656. By what percent did it come down?
  32. 32.The price of a bicycle is ₹3300. It goes up by 40%. What is the new price (in ₹)?
  33. 33.The price of a school bag changes from ₹4980 to ₹3486. By what percent did it come down?
  34. 34.A water tank holds 220 litres. 10% of the water is used. How many litres are left?
  35. 35.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  36. 36.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
  37. 37.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  38. 38.A water tank holds 720 litres. 15% of the water is used. How many litres are left?
  39. 39.The price of a school bag changes from ₹3080 to ₹2156. By what percent did it come down?
  40. 40.The price of a school bag changes from ₹1880 to ₹1598. By what percent did it come down?

Answer key

  1. 20
  2. 1170
  3. 285
  4. 40
  5. 1185
  6. 25
  7. 5512
  8. 4830
  9. 360
  10. 15.5
  11. 2
  12. 624
  13. 840
  14. 50
  15. 4592
  16. 2700
  17. 55
  18. 35
  19. 10
  20. 64
  21. 1239
  22. 28
  23. 4200
  24. 630
  25. 33
  26. 23.5
  27. 20.75
  28. 6916
  29. 594
  30. 1530
  31. 40
  32. 4620
  33. 30
  34. 198
  35. 95
  36. 49
  37. 23.5
  38. 612
  39. 30
  40. 15

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