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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 327 · 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 bicycle is ₹2220. It goes up by 15%. What is the new price (in ₹)?
  2. 2.The price of a bicycle is ₹3540. It goes up by 15%. What is the new price (in ₹)?
  3. 3.A water tank holds 3820 litres. 5% of the water is used. How many litres are left?
  4. 4.A water tank holds 1080 litres. 15% of the water is used. How many litres are left?
  5. 5.A water tank holds 2460 litres. 10% of the water is used. How many litres are left?
  6. 6.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  7. 7.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  8. 8.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  9. 9.The price of a bicycle is ₹560. It goes up by 50%. What is the new price (in ₹)?
  10. 10.The price of a school bag changes from ₹3800 to ₹3040. By what percent did it come down?
  11. 11.A water tank holds 4120 litres. 5% of the water is used. How many litres are left?
  12. 12.A town has 360 people. Its population grows by 40%. How many people live there now?
  13. 13.The price of a school bag changes from ₹4660 to ₹3262. By what percent did it come down?
  14. 14.A shop sells 3520 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  15. 15.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  16. 16.A town has 3920 people. Its population grows by 30%. How many people live there now?
  17. 17.A town has 3220 people. Its population grows by 50%. How many people live there now?
  18. 18.The price of a school bag changes from ₹3300 to ₹2805. By what percent did it come down?
  19. 19.A town has 4540 people. Its population grows by 15%. How many people live there now?
  20. 20.The price of a school bag changes from ₹1940 to ₹970. By what percent did it come down?
  21. 21.A shop sells 4860 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 20% and then comes down by 10% more. By what percent has it come down in all? =
  23. 23.The price of a school bag changes from ₹3780 to ₹4347. By what percent did it go up?
  24. 24.The price of a bicycle is ₹1560. It goes up by 40%. What is the new price (in ₹)?
  25. 25.A shop sells 3500 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  26. 26.A town has 1340 people. Its population grows by 25%. How many people live there now?
  27. 27.The price of a school bag changes from ₹840 to ₹1092. By what percent did it go up?
  28. 28.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  29. 29.A water tank holds 2480 litres. 10% of the water is used. How many litres are left?
  30. 30.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
  31. 31.A water tank holds 2500 litres. 5% of the water is used. How many litres are left?
  32. 32.A water tank holds 80 litres. 25% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹1880 to ₹2820. By what percent did it go up?
  34. 34.The price of a bicycle is ₹1380. It goes up by 25%. What is the new price (in ₹)?
  35. 35.A town has 4160 people. Its population grows by 50%. How many people live there now?
  36. 36.The price of a school bag changes from ₹1420 to ₹1278. By what percent did it come down?
  37. 37.The price of a school bag changes from ₹440 to ₹506. By what percent did it go up?
  38. 38.A town has 2320 people. Its population grows by 25%. How many people live there now?
  39. 39.A water tank holds 3400 litres. 50% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹460 to ₹506. By what percent did it go up?

Answer key

  1. 2553
  2. 4071
  3. 3629
  4. 918
  5. 2214
  6. 37.5
  7. 37.5
  8. 26.5
  9. 840
  10. 20
  11. 3914
  12. 504
  13. 30
  14. 4928
  15. 19.25
  16. 5096
  17. 4830
  18. 15
  19. 5221
  20. 50
  21. 5103
  22. 28
  23. 15
  24. 2184
  25. 3850
  26. 1675
  27. 30
  28. 32
  29. 2232
  30. 75
  31. 2375
  32. 60
  33. 50
  34. 1725
  35. 6240
  36. 10
  37. 15
  38. 2900
  39. 1700
  40. 10

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