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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 902 · 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 water tank holds 3440 litres. 5% of the water is used. How many litres are left?
  2. 2.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  3. 3.The price of a school bag changes from ₹2060 to ₹2369. By what percent did it go up?
  4. 4.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  5. 5.The price of a school bag changes from ₹3720 to ₹2976. By what percent did it come down?
  6. 6.The price of a school bag changes from ₹4300 to ₹5160. By what percent did it go up?
  7. 7.The price of a bicycle is ₹1500. It goes up by 15%. What is the new price (in ₹)?
  8. 8.The price of a school bag changes from ₹440 to ₹572. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹2080 to ₹1976. By what percent did it come down?
  10. 10.The price of a school bag changes from ₹160 to ₹176. By what percent did it go up?
  11. 11.A town has 3100 people. Its population grows by 20%. How many people live there now?
  12. 12.The price of a school bag changes from ₹3240 to ₹3564. By what percent did it go up?
  13. 13.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  14. 14.A water tank holds 3060 litres. 25% of the water is used. How many litres are left?
  15. 15.A shop sells 1620 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  16. 16.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
  17. 17.The price of a school bag changes from ₹1320 to ₹1518. By what percent did it go up?
  18. 18.A water tank holds 1120 litres. 15% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹360 to ₹342. By what percent did it come down?
  20. 20.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  21. 21.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  22. 22.A water tank holds 3820 litres. 20% of the water is used. How many litres are left?
  23. 23.The price of a bicycle is ₹1780. It goes up by 20%. What is the new price (in ₹)?
  24. 24.A water tank holds 3700 litres. 25% of the water is used. How many litres are left?
  25. 25.A shop sells 2880 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  26. 26.The price of a school bag changes from ₹1300 to ₹1430. By what percent did it go up?
  27. 27.The price of a school bag changes from ₹920 to ₹828. By what percent did it come down?
  28. 28.The price of a school bag changes from ₹1240 to ₹1054. By what percent did it come down?
  29. 29.The price of a school bag changes from ₹1420 to ₹1846. By what percent did it go up?
  30. 30.A water tank holds 3120 litres. 10% of the water is used. How many litres are left?
  31. 31.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  32. 32.A town has 220 people. Its population grows by 10%. How many people live there now?
  33. 33.The price of a school bag changes from ₹1900 to ₹2090. By what percent did it go up?
  34. 34.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
  35. 35.The price of a bicycle is ₹1340. It goes up by 20%. What is the new price (in ₹)?
  36. 36.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  37. 37.The price of a bicycle is ₹3340. It goes up by 50%. What is the new price (in ₹)?
  38. 38.The price of a school bag changes from ₹2780 to ₹2919. By what percent did it go up?
  39. 39.A water tank holds 3580 litres. 40% of the water is used. How many litres are left?
  40. 40.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =

Answer key

  1. 3268
  2. 60
  3. 15
  4. 43
  5. 20
  6. 20
  7. 1725
  8. 30
  9. 5
  10. 10
  11. 3720
  12. 10
  13. 12.5
  14. 2295
  15. 2106
  16. 70
  17. 15
  18. 952
  19. 5
  20. 33
  21. 21
  22. 3056
  23. 2136
  24. 2775
  25. 3600
  26. 10
  27. 10
  28. 15
  29. 30
  30. 2808
  31. 49.5
  32. 242
  33. 10
  34. 96
  35. 1608
  36. 36.5
  37. 5010
  38. 5
  39. 2148
  40. 43

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