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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 4 · 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 shop sells 200 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  2. 2.A shop sells 3520 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  3. 3.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  4. 4.The price of a bicycle is ₹4340. It goes up by 5%. What is the new price (in ₹)?
  5. 5.A shop sells 4340 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  6. 6.The price of a school bag changes from ₹3720 to ₹4650. By what percent did it go up?
  7. 7.A water tank holds 4840 litres. 15% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹2120 to ₹1272. By what percent did it come down?
  9. 9.The price of a school bag changes from ₹4600 to ₹6900. By what percent did it go up?
  10. 10.The price of a school bag changes from ₹2200 to ₹2860. By what percent did it go up?
  11. 11.The price of a bicycle is ₹420. It goes up by 40%. What is the new price (in ₹)?
  12. 12.The price of a bicycle is ₹3280. It goes up by 5%. What is the new price (in ₹)?
  13. 13.A water tank holds 4440 litres. 25% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹4480 to ₹4256. By what percent did it come down?
  15. 15.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
  16. 16.The price of a bicycle is ₹120. It goes up by 40%. What is the new price (in ₹)?
  17. 17.The price of a bicycle is ₹4540. It goes up by 50%. What is the new price (in ₹)?
  18. 18.The price of a bicycle is ₹800. It goes up by 10%. What is the new price (in ₹)?
  19. 19.The price of a school bag changes from ₹900 to ₹1350. By what percent did it go up?
  20. 20.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  21. 21.A water tank holds 3280 litres. 25% of the water is used. How many litres are left?
  22. 22.A water tank holds 3260 litres. 50% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹3740 to ₹1870. By what percent did it come down?
  24. 24.The price of a school bag changes from ₹100 to ₹105. By what percent did it go up?
  25. 25.The price of a school bag changes from ₹2980 to ₹3278. By what percent did it go up?
  26. 26.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
  27. 27.The price of a bicycle is ₹2260. It goes up by 50%. What is the new price (in ₹)?
  28. 28.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  29. 29.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
  30. 30.A water tank holds 2600 litres. 15% of the water is used. How many litres are left?
  31. 31.The price of a bicycle is ₹4640. It goes up by 40%. What is the new price (in ₹)?
  32. 32.A water tank holds 460 litres. 15% of the water is used. How many litres are left?
  33. 33.A water tank holds 3560 litres. 50% of the water is used. How many litres are left?
  34. 34.A price comes down by 50% and then comes down by 20% more. By what percent has it come down in all? =
  35. 35.A water tank holds 120 litres. 40% of the water is used. How many litres are left?
  36. 36.The price of a bicycle is ₹100. It goes up by 5%. What is the new price (in ₹)?
  37. 37.A shop sells 1000 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  38. 38.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  39. 39.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  40. 40.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =

Answer key

  1. 210
  2. 4224
  3. 36.25
  4. 4557
  5. 4991
  6. 25
  7. 4114
  8. 40
  9. 50
  10. 30
  11. 588
  12. 3444
  13. 3330
  14. 5
  15. 110
  16. 168
  17. 6810
  18. 880
  19. 50
  20. 75
  21. 2460
  22. 1630
  23. 50
  24. 5
  25. 10
  26. 18.75
  27. 3390
  28. 70
  29. 42.5
  30. 2210
  31. 6496
  32. 391
  33. 1780
  34. 60
  35. 72
  36. 105
  37. 1200
  38. 32.5
  39. 95
  40. 19.25

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