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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 431 · 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 ₹660 to ₹627. By what percent did it come down?
  2. 2.A water tank holds 1520 litres. 15% of the water is used. How many litres are left?
  3. 3.A shop sells 1160 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  4. 4.A shop sells 460 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  5. 5.A water tank holds 4960 litres. 15% of the water is used. How many litres are left?
  6. 6.The price of a school bag changes from ₹3880 to ₹3686. By what percent did it come down?
  7. 7.A shop sells 1600 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  8. 8.A town has 2000 people. Its population grows by 25%. How many people live there now?
  9. 9.A price comes down by 20% and then comes down by 25% more. By what percent has it come down in all? =
  10. 10.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  11. 11.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
  12. 12.A water tank holds 4880 litres. 15% of the water is used. How many litres are left?
  13. 13.A water tank holds 2480 litres. 10% of the water is used. How many litres are left?
  14. 14.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  15. 15.A water tank holds 820 litres. 5% of the water is used. How many litres are left?
  16. 16.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
  17. 17.A shop sells 780 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  18. 18.The price of a school bag changes from ₹2640 to ₹3168. By what percent did it go up?
  19. 19.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  20. 20.The price of a school bag changes from ₹1060 to ₹1325. By what percent did it go up?
  21. 21.The price of a school bag changes from ₹4940 to ₹6422. By what percent did it go up?
  22. 22.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  23. 23.A water tank holds 2800 litres. 40% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹1000 to ₹1200. By what percent did it go up?
  25. 25.A water tank holds 180 litres. 15% of the water is used. How many litres are left?
  26. 26.A water tank holds 600 litres. 50% of the water is used. How many litres are left?
  27. 27.A shop sells 320 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  28. 28.The price of a school bag changes from ₹2120 to ₹2438. By what percent did it go up?
  29. 29.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  30. 30.The price of a school bag changes from ₹4520 to ₹4746. By what percent did it go up?
  31. 31.A shop sells 3140 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  32. 32.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  33. 33.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
  34. 34.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  35. 35.A water tank holds 1560 litres. 40% of the water is used. How many litres are left?
  36. 36.A town has 500 people. Its population grows by 20%. How many people live there now?
  37. 37.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  38. 38.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
  39. 39.The price of a school bag changes from ₹2820 to ₹3102. By what percent did it go up?
  40. 40.The price of a school bag changes from ₹440 to ₹330. By what percent did it come down?

Answer key

  1. 5
  2. 1292
  3. 1450
  4. 598
  5. 4216
  6. 5
  7. 1840
  8. 2500
  9. 40
  10. 19.25
  11. 96
  12. 4148
  13. 2232
  14. 43
  15. 779
  16. 28.75
  17. 936
  18. 20
  19. 43
  20. 25
  21. 30
  22. 14
  23. 1680
  24. 20
  25. 153
  26. 300
  27. 336
  28. 15
  29. 15.5
  30. 5
  31. 3768
  32. 32
  33. 55
  34. 43.75
  35. 936
  36. 600
  37. 5
  38. 37
  39. 10
  40. 25

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