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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 513 · 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 goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  2. 2.The price of a bicycle is ₹4400. It goes up by 10%. What is the new price (in ₹)?
  3. 3.The price of a school bag changes from ₹2780 to ₹3336. By what percent did it go up?
  4. 4.The price of a school bag changes from ₹660 to ₹792. By what percent did it go up?
  5. 5.A water tank holds 640 litres. 25% of the water is used. How many litres are left?
  6. 6.The price of a school bag changes from ₹3020 to ₹3171. By what percent did it go up?
  7. 7.A water tank holds 2760 litres. 5% of the water is used. How many litres are left?
  8. 8.The price of a bicycle is ₹700. It goes up by 10%. What is the new price (in ₹)?
  9. 9.The price of a school bag changes from ₹4580 to ₹5725. By what percent did it go up?
  10. 10.The price of a school bag changes from ₹3620 to ₹4163. By what percent did it go up?
  11. 11.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  12. 12.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  13. 13.The price of a bicycle is ₹4280. It goes up by 5%. What is the new price (in ₹)?
  14. 14.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
  15. 15.A shop sells 3440 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  16. 16.The price of a school bag changes from ₹1020 to ₹1530. By what percent did it go up?
  17. 17.The price of a school bag changes from ₹3160 to ₹3950. By what percent did it go up?
  18. 18.The price of a bicycle is ₹2440. It goes up by 50%. What is the new price (in ₹)?
  19. 19.The price of a bicycle is ₹720. It goes up by 25%. What is the new price (in ₹)?
  20. 20.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  21. 21.A shop sells 3400 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  22. 22.The price of a bicycle is ₹3060. It goes up by 50%. What is the new price (in ₹)?
  23. 23.The price of a school bag changes from ₹440 to ₹396. By what percent did it come down?
  24. 24.The price of a school bag changes from ₹2520 to ₹2646. By what percent did it go up?
  25. 25.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =
  26. 26.The price of a school bag changes from ₹3480 to ₹5220. By what percent did it go up?
  27. 27.The price of a school bag changes from ₹1880 to ₹2068. By what percent did it go up?
  28. 28.A town has 4300 people. Its population grows by 50%. How many people live there now?
  29. 29.A town has 1120 people. Its population grows by 25%. How many people live there now?
  30. 30.A town has 2080 people. Its population grows by 15%. How many people live there now?
  31. 31.The price of a school bag changes from ₹3120 to ₹2964. By what percent did it come down?
  32. 32.A town has 820 people. Its population grows by 5%. How many people live there now?
  33. 33.A water tank holds 4160 litres. 50% of the water is used. How many litres are left?
  34. 34.The price of a school bag changes from ₹1180 to ₹1534. By what percent did it go up?
  35. 35.A town has 4460 people. Its population grows by 30%. How many people live there now?
  36. 36.The price of a school bag changes from ₹3700 to ₹2220. By what percent did it come down?
  37. 37.A town has 260 people. Its population grows by 50%. How many people live there now?
  38. 38.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
  39. 39.The price of a bicycle is ₹1200. It goes up by 50%. What is the new price (in ₹)?
  40. 40.A water tank holds 1380 litres. 50% of the water is used. How many litres are left?

Answer key

  1. 26.5
  2. 4840
  3. 20
  4. 20
  5. 480
  6. 5
  7. 2622
  8. 770
  9. 25
  10. 15
  11. 33
  12. 31.25
  13. 4494
  14. 55
  15. 4128
  16. 50
  17. 25
  18. 3660
  19. 900
  20. 15.5
  21. 5100
  22. 4590
  23. 10
  24. 5
  25. 62.5
  26. 50
  27. 10
  28. 6450
  29. 1400
  30. 2392
  31. 5
  32. 861
  33. 2080
  34. 30
  35. 5798
  36. 40
  37. 390
  38. 12
  39. 1800
  40. 690

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