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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 28 · 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 ₹4380. It goes up by 10%. What is the new price (in ₹)?
  2. 2.A water tank holds 3420 litres. 25% of the water is used. How many litres are left?
  3. 3.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  4. 4.A price goes up by 40% 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 ₹1920 to ₹1536. By what percent did it come down?
  6. 6.A town has 4520 people. Its population grows by 5%. How many people live there now?
  7. 7.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  8. 8.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  9. 9.The price of a bicycle is ₹2800. It goes up by 25%. What is the new price (in ₹)?
  10. 10.A water tank holds 2480 litres. 10% of the water is used. How many litres are left?
  11. 11.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  12. 12.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  13. 13.A shop sells 1980 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  14. 14.A shop sells 3440 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  15. 15.A water tank holds 1580 litres. 25% of the water is used. How many litres are left?
  16. 16.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  17. 17.The price of a school bag changes from ₹1200 to ₹1380. By what percent did it go up?
  18. 18.The price of a school bag changes from ₹4160 to ₹4368. By what percent did it go up?
  19. 19.A shop sells 300 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  20. 20.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  21. 21.The price of a bicycle is ₹3200. It goes up by 5%. What is the new price (in ₹)?
  22. 22.A shop sells 3280 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  23. 23.The price of a school bag changes from ₹720 to ₹684. By what percent did it come down?
  24. 24.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
  25. 25.The price of a school bag changes from ₹3060 to ₹2754. By what percent did it come down?
  26. 26.A shop sells 700 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  27. 27.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  28. 28.The price of a bicycle is ₹380. It goes up by 25%. What is the new price (in ₹)?
  29. 29.The price of a bicycle is ₹1220. It goes up by 50%. What is the new price (in ₹)?
  30. 30.The price of a bicycle is ₹1120. It goes up by 40%. What is the new price (in ₹)?
  31. 31.A water tank holds 400 litres. 5% of the water is used. How many litres are left?
  32. 32.A water tank holds 2900 litres. 50% of the water is used. How many litres are left?
  33. 33.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  34. 34.A water tank holds 480 litres. 5% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹720 to ₹360. By what percent did it come down?
  36. 36.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  37. 37.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  38. 38.A water tank holds 780 litres. 20% of the water is used. How many litres are left?
  39. 39.The price of a school bag changes from ₹4360 to ₹2180. By what percent did it come down?
  40. 40.A water tank holds 3880 litres. 25% of the water is used. How many litres are left?

Answer key

  1. 4818
  2. 2565
  3. 61
  4. 54
  5. 20
  6. 4746
  7. 65
  8. 57.5
  9. 3500
  10. 2232
  11. 4.5
  12. 28
  13. 2970
  14. 3784
  15. 1185
  16. 47.5
  17. 15
  18. 5
  19. 450
  20. 95
  21. 3360
  22. 3936
  23. 5
  24. 12
  25. 10
  26. 875
  27. 20.75
  28. 475
  29. 1830
  30. 1568
  31. 380
  32. 1450
  33. 3.5
  34. 456
  35. 50
  36. 47
  37. 31.25
  38. 624
  39. 50
  40. 2910

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