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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 656 · 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 price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
  2. 2.A shop sells 3800 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  3. 3.A water tank holds 860 litres. 20% of the water is used. How many litres are left?
  4. 4.A water tank holds 1240 litres. 20% of the water is used. How many litres are left?
  5. 5.The price of a bicycle is ₹580. It goes up by 50%. What is the new price (in ₹)?
  6. 6.The price of a bicycle is ₹1020. It goes up by 25%. What is the new price (in ₹)?
  7. 7.A price goes up by 20% and then comes down by 10%. By what percent has it gone up in all? =
  8. 8.The price of a bicycle is ₹1280. It goes up by 30%. What is the new price (in ₹)?
  9. 9.A water tank holds 1760 litres. 20% of the water is used. How many litres are left?
  10. 10.A water tank holds 5000 litres. 5% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹2420 to ₹1936. By what percent did it come down?
  12. 12.A shop sells 4200 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  13. 13.The price of a school bag changes from ₹1300 to ₹650. By what percent did it come down?
  14. 14.A water tank holds 460 litres. 15% of the water is used. How many litres are left?
  15. 15.A town has 2840 people. Its population grows by 40%. How many people live there now?
  16. 16.A water tank holds 600 litres. 10% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹4300 to ₹4515. By what percent did it go up?
  18. 18.A water tank holds 580 litres. 25% of the water is used. How many litres are left?
  19. 19.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  20. 20.The price of a school bag changes from ₹880 to ₹616. By what percent did it come down?
  21. 21.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  22. 22.The price of a bicycle is ₹1180. It goes up by 40%. What is the new price (in ₹)?
  23. 23.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  24. 24.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  25. 25.The price of a school bag changes from ₹4140 to ₹5175. By what percent did it go up?
  26. 26.A shop sells 800 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  27. 27.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  28. 28.A water tank holds 1060 litres. 10% of the water is used. How many litres are left?
  29. 29.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  30. 30.A water tank holds 140 litres. 25% of the water is used. How many litres are left?
  31. 31.A water tank holds 4980 litres. 20% of the water is used. How many litres are left?
  32. 32.A water tank holds 3380 litres. 25% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹2800 to ₹3220. By what percent did it go up?
  34. 34.The price of a school bag changes from ₹4180 to ₹6270. By what percent did it go up?
  35. 35.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  36. 36.The price of a school bag changes from ₹4440 to ₹5328. By what percent did it go up?
  37. 37.A water tank holds 1820 litres. 15% 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 bicycle is ₹2640. It goes up by 40%. What is the new price (in ₹)?
  40. 40.A water tank holds 780 litres. 5% of the water is used. How many litres are left?

Answer key

  1. 49
  2. 5320
  3. 688
  4. 992
  5. 870
  6. 1275
  7. 8
  8. 1664
  9. 1408
  10. 4750
  11. 20
  12. 5250
  13. 50
  14. 391
  15. 3976
  16. 540
  17. 5
  18. 435
  19. 87.5
  20. 30
  21. 35
  22. 1652
  23. 15.5
  24. 38
  25. 25
  26. 880
  27. 43
  28. 954
  29. 4
  30. 105
  31. 3984
  32. 2535
  33. 15
  34. 50
  35. 47
  36. 20
  37. 1547
  38. 37.5
  39. 3696
  40. 741

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