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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 485 · 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 price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
  2. 2.The price of a bicycle is ₹2900. It goes up by 5%. What is the new price (in ₹)?
  3. 3.A price goes up by 40% and then goes up by 25% more. By what percent has it gone up in all? =
  4. 4.The price of a school bag changes from ₹3640 to ₹2184. By what percent did it come down?
  5. 5.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  6. 6.A town has 3380 people. Its population grows by 10%. How many people live there now?
  7. 7.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  8. 8.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  9. 9.The price of a school bag changes from ₹3920 to ₹4312. By what percent did it go up?
  10. 10.A shop sells 2060 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  11. 11.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  12. 12.A price goes up by 20% and then comes down by 10%. By what percent has it gone up in all? =
  13. 13.A water tank holds 3820 litres. 40% of the water is used. How many litres are left?
  14. 14.A shop sells 3820 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  15. 15.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
  16. 16.The price of a bicycle is ₹2220. It goes up by 50%. What is the new price (in ₹)?
  17. 17.A water tank holds 1200 litres. 40% of the water is used. How many litres are left?
  18. 18.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  19. 19.The price of a school bag changes from ₹2660 to ₹3325. By what percent did it go up?
  20. 20.A water tank holds 540 litres. 15% of the water is used. How many litres are left?
  21. 21.A shop sells 860 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  22. 22.The price of a school bag changes from ₹1600 to ₹2000. By what percent did it go up?
  23. 23.The price of a school bag changes from ₹2920 to ₹4088. By what percent did it go up?
  24. 24.A price comes down by 50% and then comes down by 30% more. By what percent has it come down in all? =
  25. 25.The price of a bicycle is ₹3400. It goes up by 40%. What is the new price (in ₹)?
  26. 26.The price of a bicycle is ₹1300. It goes up by 20%. What is the new price (in ₹)?
  27. 27.The price of a bicycle is ₹4300. It goes up by 5%. What is the new price (in ₹)?
  28. 28.The price of a school bag changes from ₹520 to ₹468. By what percent did it come down?
  29. 29.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  30. 30.The price of a school bag changes from ₹1140 to ₹1710. By what percent did it go up?
  31. 31.A water tank holds 2920 litres. 20% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹2540 to ₹1778. By what percent did it come down?
  33. 33.A shop sells 220 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  34. 34.A town has 3620 people. Its population grows by 30%. How many people live there now?
  35. 35.The price of a school bag changes from ₹880 to ₹748. By what percent did it come down?
  36. 36.The price of a school bag changes from ₹780 to ₹936. By what percent did it go up?
  37. 37.The price of a school bag changes from ₹4080 to ₹2448. By what percent did it come down?
  38. 38.A shop sells 760 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  39. 39.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  40. 40.A shop sells 3260 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?

Answer key

  1. 49.5
  2. 3045
  3. 75
  4. 40
  5. 52.5
  6. 3718
  7. 43
  8. 46
  9. 10
  10. 2266
  11. 32
  12. 8
  13. 2292
  14. 4966
  15. 26
  16. 3330
  17. 720
  18. 31.25
  19. 25
  20. 459
  21. 1290
  22. 25
  23. 40
  24. 65
  25. 4760
  26. 1560
  27. 4515
  28. 10
  29. 26.5
  30. 50
  31. 2336
  32. 30
  33. 264
  34. 4706
  35. 15
  36. 20
  37. 40
  38. 1064
  39. 47.5
  40. 3423

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