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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 564 · 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 school bag changes from ₹2380 to ₹1904. By what percent did it come down?
  2. 2.A water tank holds 2820 litres. 40% of the water is used. How many litres are left?
  3. 3.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  4. 4.A shop sells 3020 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  5. 5.A shop sells 1820 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  6. 6.The price of a school bag changes from ₹2800 to ₹3220. By what percent did it go up?
  7. 7.A town has 4920 people. Its population grows by 25%. How many people live there now?
  8. 8.The price of a school bag changes from ₹3680 to ₹2576. By what percent did it come down?
  9. 9.A shop sells 180 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  10. 10.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  11. 11.A town has 4500 people. Its population grows by 50%. How many people live there now?
  12. 12.The price of a school bag changes from ₹3160 to ₹3950. By what percent did it go up?
  13. 13.The price of a bicycle is ₹4620. It goes up by 50%. What is the new price (in ₹)?
  14. 14.A price goes up by 25% and then comes down by 15%. By what percent has it gone up in all? =
  15. 15.A water tank holds 480 litres. 30% of the water is used. How many litres are left?
  16. 16.The price of a bicycle is ₹3340. It goes up by 30%. What is the new price (in ₹)?
  17. 17.The price of a school bag changes from ₹2600 to ₹2080. By what percent did it come down?
  18. 18.The price of a school bag changes from ₹1280 to ₹1792. By what percent did it go up?
  19. 19.A water tank holds 2440 litres. 15% of the water is used. How many litres are left?
  20. 20.The price of a bicycle is ₹1360. It goes up by 5%. What is the new price (in ₹)?
  21. 21.The price of a bicycle is ₹1740. It goes up by 40%. What is the new price (in ₹)?
  22. 22.The price of a bicycle is ₹3280. It goes up by 25%. What is the new price (in ₹)?
  23. 23.A water tank holds 120 litres. 30% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹4240 to ₹5300. By what percent did it go up?
  25. 25.A shop sells 480 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  26. 26.The price of a school bag changes from ₹1740 to ₹2001. By what percent did it go up?
  27. 27.The price of a bicycle is ₹4000. It goes up by 30%. What is the new price (in ₹)?
  28. 28.The price of a school bag changes from ₹2000 to ₹2500. By what percent did it go up?
  29. 29.The price of a school bag changes from ₹1320 to ₹1188. By what percent did it come down?
  30. 30.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
  31. 31.A water tank holds 1500 litres. 20% of the water is used. How many litres are left?
  32. 32.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  33. 33.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
  34. 34.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
  35. 35.The price of a bicycle is ₹460. It goes up by 5%. What is the new price (in ₹)?
  36. 36.A water tank holds 3060 litres. 5% of the water is used. How many litres are left?
  37. 37.A water tank holds 1300 litres. 5% of the water is used. How many litres are left?
  38. 38.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  39. 39.The price of a school bag changes from ₹940 to ₹846. By what percent did it come down?
  40. 40.A water tank holds 2620 litres. 40% of the water is used. How many litres are left?

Answer key

  1. 20
  2. 1692
  3. 9.75
  4. 3624
  5. 2730
  6. 15
  7. 6150
  8. 30
  9. 252
  10. 75
  11. 6750
  12. 25
  13. 6930
  14. 6.25
  15. 336
  16. 4342
  17. 20
  18. 40
  19. 2074
  20. 1428
  21. 2436
  22. 4100
  23. 84
  24. 25
  25. 720
  26. 15
  27. 5200
  28. 25
  29. 10
  30. 62.5
  31. 1200
  32. 52
  33. 40.5
  34. 110
  35. 483
  36. 2907
  37. 1235
  38. 37.5
  39. 10
  40. 1572

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