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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 18 · 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 25% and then goes up by 40% more. By what percent has it gone up in all? =
  2. 2.The price of a school bag changes from ₹1080 to ₹972. By what percent did it come down?
  3. 3.The price of a school bag changes from ₹3140 to ₹4396. By what percent did it go up?
  4. 4.A town has 680 people. Its population grows by 10%. How many people live there now?
  5. 5.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  6. 6.A shop sells 4340 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  7. 7.The price of a bicycle is ₹4860. It goes up by 40%. What is the new price (in ₹)?
  8. 8.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  9. 9.A water tank holds 1200 litres. 30% of the water is used. How many litres are left?
  10. 10.A water tank holds 3920 litres. 30% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹4880 to ₹6832. By what percent did it go up?
  12. 12.The price of a school bag changes from ₹680 to ₹340. By what percent did it come down?
  13. 13.The price of a bicycle is ₹3920. It goes up by 15%. What is the new price (in ₹)?
  14. 14.The price of a school bag changes from ₹4320 to ₹5616. By what percent did it go up?
  15. 15.A water tank holds 3400 litres. 50% of the water is used. How many litres are left?
  16. 16.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  17. 17.The price of a bicycle is ₹2080. It goes up by 25%. What is the new price (in ₹)?
  18. 18.A water tank holds 3440 litres. 40% of the water is used. How many litres are left?
  19. 19.A town has 60 people. Its population grows by 10%. How many people live there now?
  20. 20.A water tank holds 320 litres. 50% of the water is used. How many litres are left?
  21. 21.The price of a bicycle is ₹4040. It goes up by 5%. What is the new price (in ₹)?
  22. 22.A shop sells 1120 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  23. 23.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
  24. 24.A water tank holds 1920 litres. 40% of the water is used. How many litres are left?
  25. 25.A town has 4740 people. Its population grows by 30%. How many people live there now?
  26. 26.The price of a school bag changes from ₹720 to ₹864. By what percent did it go up?
  27. 27.A town has 2100 people. Its population grows by 20%. How many people live there now?
  28. 28.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
  29. 29.The price of a school bag changes from ₹2720 to ₹3264. By what percent did it go up?
  30. 30.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  31. 31.The price of a school bag changes from ₹140 to ₹210. By what percent did it go up?
  32. 32.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  33. 33.A town has 3400 people. Its population grows by 15%. How many people live there now?
  34. 34.A town has 3900 people. Its population grows by 30%. How many people live there now?
  35. 35.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
  36. 36.A town has 1320 people. Its population grows by 5%. How many people live there now?
  37. 37.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  38. 38.A water tank holds 4300 litres. 50% of the water is used. How many litres are left?
  39. 39.The price of a school bag changes from ₹2600 to ₹2990. By what percent did it go up?
  40. 40.A water tank holds 3040 litres. 30% of the water is used. How many litres are left?

Answer key

  1. 75
  2. 10
  3. 40
  4. 748
  5. 70
  6. 6076
  7. 6804
  8. 20.75
  9. 840
  10. 2744
  11. 40
  12. 50
  13. 4508
  14. 30
  15. 1700
  16. 36.25
  17. 2600
  18. 2064
  19. 66
  20. 160
  21. 4242
  22. 1344
  23. 40.5
  24. 1152
  25. 6162
  26. 20
  27. 2520
  28. 10.25
  29. 20
  30. 35
  31. 50
  32. 32.25
  33. 3910
  34. 5070
  35. 49
  36. 1386
  37. 15.5
  38. 2150
  39. 15
  40. 2128

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