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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 614 · 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 ₹1680 to ₹2016. By what percent did it go up?
  2. 2.The price of a school bag changes from ₹280 to ₹392. By what percent did it go up?
  3. 3.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  4. 4.A water tank holds 2420 litres. 30% of the water is used. How many litres are left?
  5. 5.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
  6. 6.A water tank holds 4060 litres. 20% of the water is used. How many litres are left?
  7. 7.A water tank holds 1640 litres. 40% of the water is used. How many litres are left?
  8. 8.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  9. 9.The price of a school bag changes from ₹4640 to ₹3480. By what percent did it come down?
  10. 10.A town has 2980 people. Its population grows by 40%. How many people live there now?
  11. 11.The price of a school bag changes from ₹660 to ₹495. By what percent did it come down?
  12. 12.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  13. 13.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  14. 14.The price of a school bag changes from ₹4580 to ₹6870. By what percent did it go up?
  15. 15.A water tank holds 640 litres. 5% of the water is used. How many litres are left?
  16. 16.The price of a bicycle is ₹2560. It goes up by 30%. What is the new price (in ₹)?
  17. 17.The price of a school bag changes from ₹1180 to ₹1298. By what percent did it go up?
  18. 18.A shop sells 240 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  19. 19.A water tank holds 2840 litres. 30% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹860 to ₹1204. By what percent did it go up?
  21. 21.A shop sells 4400 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  22. 22.The price of a school bag changes from ₹2180 to ₹2398. By what percent did it go up?
  23. 23.A water tank holds 540 litres. 5% of the water is used. How many litres are left?
  24. 24.A town has 180 people. Its population grows by 10%. How many people live there now?
  25. 25.A shop sells 1460 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  26. 26.A town has 4360 people. Its population grows by 40%. How many people live there now?
  27. 27.The price of a school bag changes from ₹640 to ₹608. By what percent did it come down?
  28. 28.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  29. 29.The price of a bicycle is ₹4240. It goes up by 10%. What is the new price (in ₹)?
  30. 30.The price of a school bag changes from ₹4640 to ₹6496. By what percent did it go up?
  31. 31.A shop sells 3360 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  32. 32.A town has 780 people. Its population grows by 25%. How many people live there now?
  33. 33.A town has 3140 people. Its population grows by 50%. How many people live there now?
  34. 34.A town has 340 people. Its population grows by 50%. How many people live there now?
  35. 35.The price of a bicycle is ₹1520. It goes up by 15%. What is the new price (in ₹)?
  36. 36.A water tank holds 2440 litres. 20% of the water is used. How many litres are left?
  37. 37.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  38. 38.A water tank holds 2100 litres. 40% of the water is used. How many litres are left?
  39. 39.The price of a school bag changes from ₹1680 to ₹1596. By what percent did it come down?
  40. 40.The price of a school bag changes from ₹4060 to ₹4466. By what percent did it go up?

Answer key

  1. 20
  2. 40
  3. 23.5
  4. 1694
  5. 69
  6. 3248
  7. 984
  8. 26.5
  9. 25
  10. 4172
  11. 25
  12. 35
  13. 20.75
  14. 50
  15. 608
  16. 3328
  17. 10
  18. 312
  19. 1988
  20. 40
  21. 6160
  22. 10
  23. 513
  24. 198
  25. 1898
  26. 6104
  27. 5
  28. 43
  29. 4664
  30. 40
  31. 4200
  32. 975
  33. 4710
  34. 510
  35. 1748
  36. 1952
  37. 38
  38. 1260
  39. 5
  40. 10

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