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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 446 · 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 ₹4100 to ₹3895. By what percent did it come down?
  2. 2.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  3. 3.The price of a school bag changes from ₹4680 to ₹3510. By what percent did it come down?
  4. 4.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  5. 5.A water tank holds 3840 litres. 30% of the water is used. How many litres are left?
  6. 6.A water tank holds 3600 litres. 50% of the water is used. How many litres are left?
  7. 7.A water tank holds 2480 litres. 5% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹1660 to ₹1992. By what percent did it go up?
  9. 9.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  10. 10.A water tank holds 2660 litres. 40% of the water is used. How many litres are left?
  11. 11.A water tank holds 4460 litres. 40% of the water is used. How many litres are left?
  12. 12.A town has 700 people. Its population grows by 20%. How many people live there now?
  13. 13.A town has 280 people. Its population grows by 20%. How many people live there now?
  14. 14.The price of a bicycle is ₹3940. It goes up by 30%. What is the new price (in ₹)?
  15. 15.The price of a bicycle is ₹2040. It goes up by 30%. What is the new price (in ₹)?
  16. 16.A shop sells 1600 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  17. 17.A shop sells 2900 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  18. 18.A water tank holds 2560 litres. 10% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹140 to ₹126. By what percent did it come down?
  20. 20.A water tank holds 3220 litres. 40% of the water is used. How many litres are left?
  21. 21.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  22. 22.A town has 3900 people. Its population grows by 40%. How many people live there now?
  23. 23.A shop sells 4860 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  24. 24.A water tank holds 1560 litres. 30% of the water is used. How many litres are left?
  25. 25.A price comes down by 50% and then comes down by 30% more. By what percent has it come down in all? =
  26. 26.A town has 3000 people. Its population grows by 40%. How many people live there now?
  27. 27.The price of a school bag changes from ₹4920 to ₹5658. By what percent did it go up?
  28. 28.The price of a school bag changes from ₹4300 to ₹5375. By what percent did it go up?
  29. 29.The price of a bicycle is ₹2580. It goes up by 40%. What is the new price (in ₹)?
  30. 30.A water tank holds 4520 litres. 5% of the water is used. How many litres are left?
  31. 31.The price of a school bag changes from ₹460 to ₹437. By what percent did it come down?
  32. 32.The price of a school bag changes from ₹1920 to ₹1440. By what percent did it come down?
  33. 33.A water tank holds 4700 litres. 30% of the water is used. How many litres are left?
  34. 34.The price of a bicycle is ₹2040. It goes up by 25%. What is the new price (in ₹)?
  35. 35.A town has 840 people. Its population grows by 50%. How many people live there now?
  36. 36.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  37. 37.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  38. 38.The price of a school bag changes from ₹620 to ₹682. By what percent did it go up?
  39. 39.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  40. 40.A water tank holds 4840 litres. 15% of the water is used. How many litres are left?

Answer key

  1. 5
  2. 61
  3. 25
  4. 43
  5. 2688
  6. 1800
  7. 2356
  8. 20
  9. 20.75
  10. 1596
  11. 2676
  12. 840
  13. 336
  14. 5122
  15. 2652
  16. 1760
  17. 3190
  18. 2304
  19. 10
  20. 1932
  21. 52
  22. 5460
  23. 5346
  24. 1092
  25. 65
  26. 4200
  27. 15
  28. 25
  29. 3612
  30. 4294
  31. 5
  32. 25
  33. 3290
  34. 2550
  35. 1260
  36. 49.5
  37. 37.5
  38. 10
  39. 62.5
  40. 4114

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