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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 194 · 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 price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  2. 2.The price of a bicycle is ₹1520. It goes up by 10%. What is the new price (in ₹)?
  3. 3.The price of a school bag changes from ₹1200 to ₹1560. By what percent did it go up?
  4. 4.The price of a school bag changes from ₹3440 to ₹3956. By what percent did it go up?
  5. 5.The price of a bicycle is ₹2860. It goes up by 30%. What is the new price (in ₹)?
  6. 6.A town has 520 people. Its population grows by 25%. How many people live there now?
  7. 7.A shop sells 4960 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  8. 8.A town has 2820 people. Its population grows by 10%. How many people live there now?
  9. 9.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  10. 10.A water tank holds 80 litres. 50% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹800 to ₹720. By what percent did it come down?
  12. 12.The price of a bicycle is ₹1140. It goes up by 20%. What is the new price (in ₹)?
  13. 13.The price of a school bag changes from ₹1040 to ₹1248. By what percent did it go up?
  14. 14.A town has 420 people. Its population grows by 20%. How many people live there now?
  15. 15.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  16. 16.A water tank holds 1200 litres. 30% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹5000 to ₹6000. By what percent did it go up?
  18. 18.The price of a school bag changes from ₹2560 to ₹3200. By what percent did it go up?
  19. 19.The price of a school bag changes from ₹1040 to ₹1300. By what percent did it go up?
  20. 20.A shop sells 3860 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  21. 21.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  22. 22.The price of a bicycle is ₹2640. It goes up by 10%. What is the new price (in ₹)?
  23. 23.The price of a bicycle is ₹2540. It goes up by 15%. What is the new price (in ₹)?
  24. 24.A water tank holds 1920 litres. 15% of the water is used. How many litres are left?
  25. 25.A shop sells 2500 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  26. 26.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  27. 27.A shop sells 480 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  28. 28.The price of a bicycle is ₹420. It goes up by 10%. What is the new price (in ₹)?
  29. 29.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  30. 30.The price of a school bag changes from ₹2920 to ₹3066. By what percent did it go up?
  31. 31.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  32. 32.The price of a school bag changes from ₹3600 to ₹2700. By what percent did it come down?
  33. 33.A shop sells 2100 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  34. 34.The price of a school bag changes from ₹3960 to ₹4158. By what percent did it go up?
  35. 35.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
  36. 36.A shop sells 880 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  37. 37.The price of a school bag changes from ₹2500 to ₹3250. By what percent did it go up?
  38. 38.A town has 80 people. Its population grows by 15%. How many people live there now?
  39. 39.A water tank holds 4440 litres. 5% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹2340 to ₹1989. By what percent did it come down?

Answer key

  1. 57.5
  2. 1672
  3. 30
  4. 15
  5. 3718
  6. 650
  7. 5704
  8. 3102
  9. 20.75
  10. 40
  11. 10
  12. 1368
  13. 20
  14. 504
  15. 31.25
  16. 840
  17. 20
  18. 25
  19. 25
  20. 4439
  21. 72.5
  22. 2904
  23. 2921
  24. 1632
  25. 2875
  26. 47.5
  27. 552
  28. 462
  29. 87.5
  30. 5
  31. 28.75
  32. 25
  33. 2415
  34. 5
  35. 55
  36. 1056
  37. 30
  38. 92
  39. 4218
  40. 15

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