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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 840 · 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 shop sells 200 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  2. 2.The price of a school bag changes from ₹580 to ₹348. By what percent did it come down?
  3. 3.The price of a bicycle is ₹4540. It goes up by 40%. What is the new price (in ₹)?
  4. 4.A water tank holds 3920 litres. 5% of the water is used. How many litres are left?
  5. 5.A water tank holds 4020 litres. 15% of the water is used. How many litres are left?
  6. 6.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  7. 7.A water tank holds 4820 litres. 25% of the water is used. How many litres are left?
  8. 8.A town has 2400 people. Its population grows by 10%. How many people live there now?
  9. 9.A price comes down by 50% and then comes down by 20% more. By what percent has it come down in all? =
  10. 10.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
  11. 11.A shop sells 920 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  12. 12.The price of a school bag changes from ₹320 to ₹480. By what percent did it go up?
  13. 13.A water tank holds 2240 litres. 30% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹3020 to ₹2265. By what percent did it come down?
  15. 15.The price of a school bag changes from ₹2900 to ₹1450. By what percent did it come down?
  16. 16.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
  17. 17.A price comes down by 20% and then comes down by 15% more. By what percent has it come down in all? =
  18. 18.The price of a school bag changes from ₹260 to ₹312. By what percent did it go up?
  19. 19.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
  20. 20.The price of a bicycle is ₹2960. It goes up by 40%. What is the new price (in ₹)?
  21. 21.The price of a school bag changes from ₹1360 to ₹816. By what percent did it come down?
  22. 22.The price of a school bag changes from ₹3300 to ₹4620. By what percent did it go up?
  23. 23.The price of a school bag changes from ₹820 to ₹902. By what percent did it go up?
  24. 24.A shop sells 4760 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  25. 25.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  26. 26.A town has 260 people. Its population grows by 30%. How many people live there now?
  27. 27.A water tank holds 3860 litres. 15% of the water is used. How many litres are left?
  28. 28.A town has 4000 people. Its population grows by 10%. How many people live there now?
  29. 29.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  30. 30.The price of a school bag changes from ₹1680 to ₹1932. By what percent did it go up?
  31. 31.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  32. 32.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  33. 33.A shop sells 3020 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  34. 34.A town has 3680 people. Its population grows by 50%. How many people live there now?
  35. 35.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  36. 36.The price of a school bag changes from ₹2940 to ₹2793. By what percent did it come down?
  37. 37.The price of a school bag changes from ₹1180 to ₹1357. By what percent did it go up?
  38. 38.A town has 260 people. Its population grows by 20%. How many people live there now?
  39. 39.A water tank holds 3980 litres. 40% of the water is used. How many litres are left?
  40. 40.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =

Answer key

  1. 240
  2. 40
  3. 6356
  4. 3724
  5. 3417
  6. 23.5
  7. 3615
  8. 2640
  9. 60
  10. 44
  11. 1150
  12. 50
  13. 1568
  14. 25
  15. 50
  16. 68
  17. 32
  18. 20
  19. 75
  20. 4144
  21. 40
  22. 40
  23. 10
  24. 5950
  25. 47.5
  26. 338
  27. 3281
  28. 4400
  29. 49.5
  30. 15
  31. 20.75
  32. 47
  33. 3171
  34. 5520
  35. 47.5
  36. 5
  37. 15
  38. 312
  39. 2388
  40. 62.5

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