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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 499 · 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.

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  1. 1.A shop sells 340 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  2. 2.The price of a bicycle is ₹4040. It goes up by 10%. What is the new price (in ₹)?
  3. 3.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
  4. 4.The price of a bicycle is ₹3480. It goes up by 15%. What is the new price (in ₹)?
  5. 5.The price of a bicycle is ₹1000. It goes up by 50%. What is the new price (in ₹)?
  6. 6.The price of a school bag changes from ₹1500 to ₹1650. By what percent did it go up?
  7. 7.The price of a bicycle is ₹680. It goes up by 20%. What is the new price (in ₹)?
  8. 8.A town has 3620 people. Its population grows by 20%. How many people live there now?
  9. 9.A shop sells 3360 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  10. 10.A water tank holds 1320 litres. 10% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹2740 to ₹2192. By what percent did it come down?
  12. 12.A price comes down by 15% and then comes down by 25% more. By what percent has it come down in all? =
  13. 13.A town has 3760 people. Its population grows by 40%. How many people live there now?
  14. 14.A town has 1800 people. Its population grows by 50%. How many people live there now?
  15. 15.The price of a school bag changes from ₹3840 to ₹4416. By what percent did it go up?
  16. 16.A shop sells 1120 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  17. 17.The price of a school bag changes from ₹1440 to ₹1872. By what percent did it go up?
  18. 18.The price of a bicycle is ₹280. It goes up by 20%. What is the new price (in ₹)?
  19. 19.The price of a school bag changes from ₹1400 to ₹1820. By what percent did it go up?
  20. 20.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  21. 21.A water tank holds 1800 litres. 5% of the water is used. How many litres are left?
  22. 22.The price of a bicycle is ₹500. It goes up by 25%. What is the new price (in ₹)?
  23. 23.A water tank holds 620 litres. 5% of the water is used. How many litres are left?
  24. 24.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  25. 25.The price of a bicycle is ₹420. It goes up by 40%. What is the new price (in ₹)?
  26. 26.A water tank holds 1800 litres. 50% of the water is used. How many litres are left?
  27. 27.A water tank holds 820 litres. 5% of the water is used. How many litres are left?
  28. 28.The price of a bicycle is ₹300. It goes up by 30%. What is the new price (in ₹)?
  29. 29.A water tank holds 4020 litres. 15% of the water is used. How many litres are left?
  30. 30.A town has 2580 people. Its population grows by 10%. How many people live there now?
  31. 31.A water tank holds 3340 litres. 5% of the water is used. How many litres are left?
  32. 32.A water tank holds 3380 litres. 40% of the water is used. How many litres are left?
  33. 33.A town has 1840 people. Its population grows by 15%. How many people live there now?
  34. 34.The price of a bicycle is ₹4860. It goes up by 15%. What is the new price (in ₹)?
  35. 35.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  36. 36.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  37. 37.A price comes down by 25% and then comes down by 20% more. By what percent has it come down in all? =
  38. 38.The price of a bicycle is ₹1440. It goes up by 25%. What is the new price (in ₹)?
  39. 39.The price of a school bag changes from ₹3040 to ₹1520. By what percent did it come down?
  40. 40.A water tank holds 3840 litres. 50% of the water is used. How many litres are left?

Answer key

  1. 425
  2. 4444
  3. 49
  4. 4002
  5. 1500
  6. 10
  7. 816
  8. 4344
  9. 3696
  10. 1188
  11. 20
  12. 36.25
  13. 5264
  14. 2700
  15. 15
  16. 1456
  17. 30
  18. 336
  19. 30
  20. 27.5
  21. 1710
  22. 625
  23. 589
  24. 43.75
  25. 588
  26. 900
  27. 779
  28. 390
  29. 3417
  30. 2838
  31. 3173
  32. 2028
  33. 2116
  34. 5589
  35. 37.5
  36. 47.5
  37. 40
  38. 1800
  39. 50
  40. 1920

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