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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 976 · 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 40% and then goes up by 10% more. By what percent has it gone up in all? =
  2. 2.A water tank holds 1720 litres. 15% of the water is used. How many litres are left?
  3. 3.A price comes down by 20% and then comes down by 15% more. By what percent has it come down in all? =
  4. 4.The price of a school bag changes from ₹60 to ₹66. By what percent did it go up?
  5. 5.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  6. 6.The price of a school bag changes from ₹1640 to ₹2050. By what percent did it go up?
  7. 7.The price of a school bag changes from ₹2420 to ₹3146. By what percent did it go up?
  8. 8.A price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
  9. 9.A water tank holds 1780 litres. 15% of the water is used. How many litres are left?
  10. 10.A shop sells 1380 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  11. 11.The price of a bicycle is ₹2440. It goes up by 20%. What is the new price (in ₹)?
  12. 12.A town has 3820 people. Its population grows by 40%. How many people live there now?
  13. 13.A price goes up by 20% and then goes up by 25% more. By what percent has it gone up in all? =
  14. 14.A water tank holds 3620 litres. 15% of the water is used. How many litres are left?
  15. 15.A price goes up by 40% and then goes up by 25% more. By what percent has it gone up in all? =
  16. 16.The price of a bicycle is ₹4520. It goes up by 5%. What is the new price (in ₹)?
  17. 17.The price of a bicycle is ₹2360. It goes up by 15%. What is the new price (in ₹)?
  18. 18.The price of a school bag changes from ₹840 to ₹1008. By what percent did it go up?
  19. 19.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  20. 20.A town has 4620 people. Its population grows by 5%. How many people live there now?
  21. 21.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
  22. 22.A water tank holds 2440 litres. 50% of the water is used. How many litres are left?
  23. 23.A town has 2460 people. Its population grows by 10%. How many people live there now?
  24. 24.A water tank holds 4580 litres. 5% of the water is used. How many litres are left?
  25. 25.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹1040 to ₹832. By what percent did it come down?
  27. 27.A town has 4580 people. Its population grows by 5%. How many people live there now?
  28. 28.The price of a school bag changes from ₹3840 to ₹5376. By what percent did it go up?
  29. 29.The price of a bicycle is ₹2580. It goes up by 10%. What is the new price (in ₹)?
  30. 30.A shop sells 4000 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  31. 31.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  32. 32.The price of a bicycle is ₹1720. It goes up by 15%. What is the new price (in ₹)?
  33. 33.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹940 to ₹1222. By what percent did it go up?
  35. 35.The price of a bicycle is ₹720. It goes up by 10%. What is the new price (in ₹)?
  36. 36.The price of a school bag changes from ₹4660 to ₹3495. By what percent did it come down?
  37. 37.The price of a school bag changes from ₹2200 to ₹1650. By what percent did it come down?
  38. 38.The price of a school bag changes from ₹1880 to ₹1128. By what percent did it come down?
  39. 39.The price of a school bag changes from ₹1640 to ₹1558. By what percent did it come down?
  40. 40.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =

Answer key

  1. 54
  2. 1462
  3. 32
  4. 10
  5. 15.5
  6. 25
  7. 30
  8. 49.5
  9. 1513
  10. 1794
  11. 2928
  12. 5348
  13. 50
  14. 3077
  15. 75
  16. 4746
  17. 2714
  18. 20
  19. 47
  20. 4851
  21. 24
  22. 1220
  23. 2706
  24. 4351
  25. 72.5
  26. 20
  27. 4809
  28. 40
  29. 2838
  30. 4600
  31. 61
  32. 1978
  33. 35
  34. 30
  35. 792
  36. 25
  37. 25
  38. 40
  39. 5
  40. 49.5

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