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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 928 · 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 goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
  2. 2.The price of a school bag changes from ₹2660 to ₹2793. By what percent did it go up?
  3. 3.The price of a school bag changes from ₹4360 to ₹5450. By what percent did it go up?
  4. 4.The price of a bicycle is ₹1420. It goes up by 40%. What is the new price (in ₹)?
  5. 5.The price of a school bag changes from ₹4780 to ₹4541. By what percent did it come down?
  6. 6.A water tank holds 3580 litres. 40% of the water is used. How many litres are left?
  7. 7.A price goes up by 20% and then goes up by 25% more. By what percent has it gone up in all? =
  8. 8.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  9. 9.The price of a bicycle is ₹80. It goes up by 15%. What is the new price (in ₹)?
  10. 10.The price of a bicycle is ₹3600. It goes up by 25%. What is the new price (in ₹)?
  11. 11.The price of a school bag changes from ₹320 to ₹288. By what percent did it come down?
  12. 12.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =
  13. 13.A water tank holds 2720 litres. 10% of the water is used. How many litres are left?
  14. 14.A water tank holds 4440 litres. 50% of the water is used. How many litres are left?
  15. 15.A water tank holds 3240 litres. 25% of the water is used. How many litres are left?
  16. 16.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  17. 17.A shop sells 1360 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  18. 18.A water tank holds 4240 litres. 15% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹2240 to ₹2352. By what percent did it go up?
  20. 20.A town has 3360 people. Its population grows by 25%. How many people live there now?
  21. 21.The price of a school bag changes from ₹2520 to ₹2394. By what percent did it come down?
  22. 22.A town has 2460 people. Its population grows by 30%. How many people live there now?
  23. 23.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  24. 24.A water tank holds 4320 litres. 50% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹660 to ₹858. By what percent did it go up?
  26. 26.A shop sells 400 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  27. 27.A town has 60 people. Its population grows by 5%. How many people live there now?
  28. 28.The price of a school bag changes from ₹1340 to ₹1541. By what percent did it go up?
  29. 29.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  30. 30.A water tank holds 2300 litres. 10% of the water is used. How many litres are left?
  31. 31.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  32. 32.A water tank holds 880 litres. 15% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹4580 to ₹5954. By what percent did it go up?
  34. 34.A shop sells 660 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  35. 35.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  36. 36.A water tank holds 2180 litres. 10% of the water is used. How many litres are left?
  37. 37.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  38. 38.A water tank holds 2140 litres. 50% of the water is used. How many litres are left?
  39. 39.A water tank holds 4180 litres. 5% of the water is used. How many litres are left?
  40. 40.A water tank holds 1520 litres. 30% of the water is used. How many litres are left?

Answer key

  1. 68
  2. 5
  3. 25
  4. 1988
  5. 5
  6. 2148
  7. 50
  8. 43
  9. 92
  10. 4500
  11. 10
  12. 55
  13. 2448
  14. 2220
  15. 2430
  16. 19
  17. 1768
  18. 3604
  19. 5
  20. 4200
  21. 5
  22. 3198
  23. 57.5
  24. 2160
  25. 30
  26. 440
  27. 63
  28. 15
  29. 19.25
  30. 2070
  31. 57.5
  32. 748
  33. 30
  34. 858
  35. 52
  36. 1962
  37. 65
  38. 1070
  39. 3971
  40. 1064

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