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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 644 · 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.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
  2. 2.The price of a school bag changes from ₹4880 to ₹5124. By what percent did it go up?
  3. 3.A water tank holds 3860 litres. 5% of the water is used. How many litres are left?
  4. 4.A water tank holds 4300 litres. 30% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹80 to ₹40. By what percent did it come down?
  6. 6.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  7. 7.The price of a school bag changes from ₹4960 to ₹7440. By what percent did it go up?
  8. 8.A water tank holds 4320 litres. 40% of the water is used. How many litres are left?
  9. 9.The price of a school bag changes from ₹80 to ₹60. By what percent did it come down?
  10. 10.The price of a school bag changes from ₹2860 to ₹2717. By what percent did it come down?
  11. 11.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  12. 12.A town has 3360 people. Its population grows by 10%. How many people live there now?
  13. 13.The price of a school bag changes from ₹280 to ₹196. By what percent did it come down?
  14. 14.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  15. 15.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  16. 16.A water tank holds 2340 litres. 20% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹4540 to ₹4313. By what percent did it come down?
  18. 18.A town has 2400 people. Its population grows by 50%. How many people live there now?
  19. 19.The price of a school bag changes from ₹1580 to ₹1106. By what percent did it come down?
  20. 20.The price of a school bag changes from ₹4160 to ₹4992. By what percent did it go up?
  21. 21.A water tank holds 1940 litres. 10% of the water is used. How many litres are left?
  22. 22.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  23. 23.The price of a bicycle is ₹4720. It goes up by 30%. What is the new price (in ₹)?
  24. 24.The price of a bicycle is ₹3560. It goes up by 5%. What is the new price (in ₹)?
  25. 25.The price of a school bag changes from ₹800 to ₹1040. By what percent did it go up?
  26. 26.A water tank holds 4280 litres. 30% of the water is used. How many litres are left?
  27. 27.A water tank holds 4380 litres. 30% of the water is used. How many litres are left?
  28. 28.The price of a school bag changes from ₹3920 to ₹4900. By what percent did it go up?
  29. 29.The price of a school bag changes from ₹3340 to ₹3173. By what percent did it come down?
  30. 30.The price of a school bag changes from ₹1280 to ₹1600. By what percent did it go up?
  31. 31.A shop sells 860 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  32. 32.The price of a school bag changes from ₹860 to ₹903. By what percent did it go up?
  33. 33.The price of a school bag changes from ₹2200 to ₹2750. By what percent did it go up?
  34. 34.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  35. 35.The price of a bicycle is ₹400. It goes up by 25%. What is the new price (in ₹)?
  36. 36.The price of a school bag changes from ₹3980 to ₹4776. By what percent did it go up?
  37. 37.The price of a school bag changes from ₹3900 to ₹5850. By what percent did it go up?
  38. 38.A town has 1780 people. Its population grows by 25%. How many people live there now?
  39. 39.The price of a school bag changes from ₹1900 to ₹2660. By what percent did it go up?
  40. 40.A water tank holds 1380 litres. 15% of the water is used. How many litres are left?

Answer key

  1. 44
  2. 5
  3. 3667
  4. 3010
  5. 50
  6. 87.5
  7. 50
  8. 2592
  9. 25
  10. 5
  11. 27.5
  12. 3696
  13. 30
  14. 19.25
  15. 60
  16. 1872
  17. 5
  18. 3600
  19. 30
  20. 20
  21. 1746
  22. 27.75
  23. 6136
  24. 3738
  25. 30
  26. 2996
  27. 3066
  28. 25
  29. 5
  30. 25
  31. 989
  32. 5
  33. 25
  34. 20.75
  35. 500
  36. 20
  37. 50
  38. 2225
  39. 40
  40. 1173

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