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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 362 · 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 ₹2000 to ₹1500. By what percent did it come down?
  2. 2.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  3. 3.A water tank holds 2900 litres. 30% of the water is used. How many litres are left?
  4. 4.A shop sells 4160 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  5. 5.A water tank holds 160 litres. 5% of the water is used. How many litres are left?
  6. 6.A town has 5000 people. Its population grows by 15%. How many people live there now?
  7. 7.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  8. 8.The price of a bicycle is ₹3880. It goes up by 30%. What is the new price (in ₹)?
  9. 9.A water tank holds 2160 litres. 25% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹3760 to ₹3384. By what percent did it come down?
  11. 11.A price goes up by 30% and then goes up by 20% more. By what percent has it gone up in all? =
  12. 12.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
  13. 13.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  14. 14.A water tank holds 1360 litres. 15% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹3020 to ₹4228. By what percent did it go up?
  16. 16.The price of a school bag changes from ₹2180 to ₹2507. By what percent did it go up?
  17. 17.A town has 2620 people. Its population grows by 30%. How many people live there now?
  18. 18.The price of a bicycle is ₹3640. It goes up by 15%. What is the new price (in ₹)?
  19. 19.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
  20. 20.The price of a school bag changes from ₹2320 to ₹3248. By what percent did it go up?
  21. 21.The price of a school bag changes from ₹3520 to ₹3168. By what percent did it come down?
  22. 22.A water tank holds 2000 litres. 5% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹2820 to ₹4230. By what percent did it go up?
  24. 24.A water tank holds 3860 litres. 25% of the water is used. How many litres are left?
  25. 25.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  26. 26.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  27. 27.A town has 1140 people. Its population grows by 10%. How many people live there now?
  28. 28.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  29. 29.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  30. 30.A price goes up by 40% and then goes up by 25% more. By what percent has it gone up in all? =
  31. 31.The price of a school bag changes from ₹540 to ₹513. By what percent did it come down?
  32. 32.The price of a school bag changes from ₹4740 to ₹5451. By what percent did it go up?
  33. 33.The price of a school bag changes from ₹4500 to ₹6300. By what percent did it go up?
  34. 34.A water tank holds 3880 litres. 25% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹600 to ₹780. By what percent did it go up?
  36. 36.A water tank holds 500 litres. 30% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹3060 to ₹2907. By what percent did it come down?
  38. 38.The price of a school bag changes from ₹4900 to ₹3430. By what percent did it come down?
  39. 39.The price of a bicycle is ₹1460. It goes up by 5%. What is the new price (in ₹)?
  40. 40.The price of a school bag changes from ₹2500 to ₹2750. By what percent did it go up?

Answer key

  1. 25
  2. 20
  3. 2030
  4. 4784
  5. 152
  6. 5750
  7. 87.5
  8. 5044
  9. 1620
  10. 10
  11. 56
  12. 10.25
  13. 36.5
  14. 1156
  15. 40
  16. 15
  17. 3406
  18. 4186
  19. 33.5
  20. 40
  21. 10
  22. 1900
  23. 50
  24. 2895
  25. 46
  26. 57.5
  27. 1254
  28. 95
  29. 33.5
  30. 75
  31. 5
  32. 15
  33. 40
  34. 2910
  35. 30
  36. 350
  37. 5
  38. 30
  39. 1533
  40. 10

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