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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 36 · 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 ₹3140. It goes up by 5%. What is the new price (in ₹)?
  2. 2.A water tank holds 1060 litres. 40% of the water is used. How many litres are left?
  3. 3.A price goes up by 20% and then goes up by 20% more. By what percent has it gone up in all? =
  4. 4.The price of a school bag changes from ₹4580 to ₹2748. By what percent did it come down?
  5. 5.The price of a school bag changes from ₹1800 to ₹2160. By what percent did it go up?
  6. 6.The price of a school bag changes from ₹3000 to ₹3600. By what percent did it go up?
  7. 7.A town has 2160 people. Its population grows by 25%. How many people live there now?
  8. 8.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  9. 9.The price of a bicycle is ₹1300. It goes up by 25%. What is the new price (in ₹)?
  10. 10.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
  11. 11.A water tank holds 1520 litres. 10% of the water is used. How many litres are left?
  12. 12.A shop sells 1280 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  13. 13.A town has 680 people. Its population grows by 25%. How many people live there now?
  14. 14.A shop sells 2820 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  15. 15.A price goes up by 30% and then goes up by 20% more. By what percent has it gone up in all? =
  16. 16.A town has 1060 people. Its population grows by 25%. How many people live there now?
  17. 17.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  18. 18.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
  19. 19.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  20. 20.The price of a school bag changes from ₹740 to ₹814. By what percent did it go up?
  21. 21.A water tank holds 1020 litres. 10% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹4080 to ₹6120. By what percent did it go up?
  23. 23.The price of a school bag changes from ₹1720 to ₹1290. By what percent did it come down?
  24. 24.A town has 1940 people. Its population grows by 50%. How many people live there now?
  25. 25.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹3840 to ₹2304. By what percent did it come down?
  27. 27.A town has 4820 people. Its population grows by 15%. How many people live there now?
  28. 28.The price of a school bag changes from ₹1780 to ₹2225. By what percent did it go up?
  29. 29.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  30. 30.A town has 1080 people. Its population grows by 10%. How many people live there now?
  31. 31.The price of a school bag changes from ₹3980 to ₹2985. By what percent did it come down?
  32. 32.The price of a school bag changes from ₹780 to ₹624. By what percent did it come down?
  33. 33.A town has 3800 people. Its population grows by 30%. How many people live there now?
  34. 34.The price of a bicycle is ₹280. It goes up by 15%. What is the new price (in ₹)?
  35. 35.The price of a school bag changes from ₹3120 to ₹2496. By what percent did it come down?
  36. 36.A town has 4420 people. Its population grows by 25%. How many people live there now?
  37. 37.A water tank holds 3920 litres. 20% of the water is used. How many litres are left?
  38. 38.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  39. 39.The price of a bicycle is ₹4880. It goes up by 10%. What is the new price (in ₹)?
  40. 40.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =

Answer key

  1. 3297
  2. 636
  3. 44
  4. 40
  5. 20
  6. 20
  7. 2700
  8. 58
  9. 1625
  10. 56
  11. 1368
  12. 1344
  13. 850
  14. 3666
  15. 56
  16. 1325
  17. 23.5
  18. 55
  19. 52.5
  20. 10
  21. 918
  22. 50
  23. 25
  24. 2910
  25. 4
  26. 40
  27. 5543
  28. 25
  29. 70
  30. 1188
  31. 25
  32. 20
  33. 4940
  34. 322
  35. 20
  36. 5525
  37. 3136
  38. 60
  39. 5368
  40. 15.5

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