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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 832 · 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 bicycle is ₹3100. It goes up by 10%. What is the new price (in ₹)?
  2. 2.The price of a school bag changes from ₹2320 to ₹2784. By what percent did it go up?
  3. 3.The price of a school bag changes from ₹160 to ₹176. By what percent did it go up?
  4. 4.A water tank holds 3840 litres. 5% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹3200 to ₹1600. By what percent did it come down?
  6. 6.A shop sells 1340 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  7. 7.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  8. 8.A water tank holds 380 litres. 5% of the water is used. How many litres are left?
  9. 9.A town has 3100 people. Its population grows by 25%. How many people live there now?
  10. 10.The price of a school bag changes from ₹4400 to ₹6160. By what percent did it go up?
  11. 11.The price of a school bag changes from ₹2640 to ₹1848. By what percent did it come down?
  12. 12.A water tank holds 2940 litres. 15% of the water is used. How many litres are left?
  13. 13.A shop sells 340 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  14. 14.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
  15. 15.A shop sells 3860 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  16. 16.A price goes up by 20% and then goes up by 20% more. By what percent has it gone up in all? =
  17. 17.The price of a school bag changes from ₹1800 to ₹1440. By what percent did it come down?
  18. 18.The price of a school bag changes from ₹420 to ₹630. By what percent did it go up?
  19. 19.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
  20. 20.A price goes up by 40% and then goes up by 25% more. By what percent has it gone up in all? =
  21. 21.The price of a school bag changes from ₹300 to ₹180. By what percent did it come down?
  22. 22.The price of a school bag changes from ₹3040 to ₹1520. By what percent did it come down?
  23. 23.A water tank holds 1740 litres. 15% of the water is used. How many litres are left?
  24. 24.The price of a bicycle is ₹2620. It goes up by 30%. What is the new price (in ₹)?
  25. 25.A shop sells 4220 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  26. 26.A water tank holds 4620 litres. 30% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹4800 to ₹2400. By what percent did it come down?
  28. 28.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  29. 29.A price goes up by 25% and then comes down by 15%. By what percent has it gone up in all? =
  30. 30.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  31. 31.The price of a school bag changes from ₹3820 to ₹3247. By what percent did it come down?
  32. 32.A shop sells 3580 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  33. 33.The price of a school bag changes from ₹380 to ₹437. By what percent did it go up?
  34. 34.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  35. 35.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  36. 36.The price of a bicycle is ₹2840. It goes up by 50%. What is the new price (in ₹)?
  37. 37.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  38. 38.A water tank holds 900 litres. 30% of the water is used. How many litres are left?
  39. 39.A town has 3640 people. Its population grows by 10%. How many people live there now?
  40. 40.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =

Answer key

  1. 3410
  2. 20
  3. 10
  4. 3648
  5. 50
  6. 1742
  7. 36.5
  8. 361
  9. 3875
  10. 40
  11. 30
  12. 2499
  13. 476
  14. 18.75
  15. 4246
  16. 44
  17. 20
  18. 50
  19. 55
  20. 75
  21. 40
  22. 50
  23. 1479
  24. 3406
  25. 4431
  26. 3234
  27. 50
  28. 70
  29. 6.25
  30. 20.75
  31. 15
  32. 4654
  33. 15
  34. 15.5
  35. 26.5
  36. 4260
  37. 52
  38. 630
  39. 4004
  40. 40.5

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