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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 495 · 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 ₹4520. It goes up by 50%. What is the new price (in ₹)?
  2. 2.The price of a school bag changes from ₹3320 to ₹3652. By what percent did it go up?
  3. 3.A water tank holds 3880 litres. 15% of the water is used. How many litres are left?
  4. 4.The price of a bicycle is ₹4160. It goes up by 30%. What is the new price (in ₹)?
  5. 5.The price of a bicycle is ₹4740. It goes up by 30%. What is the new price (in ₹)?
  6. 6.A water tank holds 580 litres. 25% of the water is used. How many litres are left?
  7. 7.A water tank holds 3300 litres. 25% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹1280 to ₹1408. By what percent did it go up?
  9. 9.The price of a bicycle is ₹1420. It goes up by 50%. What is the new price (in ₹)?
  10. 10.The price of a bicycle is ₹3180. It goes up by 30%. What is the new price (in ₹)?
  11. 11.The price of a school bag changes from ₹1420 to ₹1562. By what percent did it go up?
  12. 12.The price of a school bag changes from ₹920 to ₹782. By what percent did it come down?
  13. 13.A water tank holds 3360 litres. 30% of the water is used. How many litres are left?
  14. 14.A water tank holds 2900 litres. 25% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹360 to ₹270. By what percent did it come down?
  16. 16.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
  17. 17.A water tank holds 3680 litres. 20% of the water is used. How many litres are left?
  18. 18.A water tank holds 2180 litres. 30% of the water is used. How many litres are left?
  19. 19.The price of a bicycle is ₹4340. It goes up by 40%. What is the new price (in ₹)?
  20. 20.A shop sells 2040 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  21. 21.The price of a school bag changes from ₹2280 to ₹3192. By what percent did it go up?
  22. 22.The price of a school bag changes from ₹4540 to ₹4994. By what percent did it go up?
  23. 23.The price of a bicycle is ₹3120. It goes up by 10%. What is the new price (in ₹)?
  24. 24.A water tank holds 2880 litres. 50% of the water is used. How many litres are left?
  25. 25.A shop sells 540 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  26. 26.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  27. 27.The price of a school bag changes from ₹3980 to ₹4179. By what percent did it go up?
  28. 28.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  29. 29.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  30. 30.A water tank holds 2640 litres. 50% of the water is used. How many litres are left?
  31. 31.A water tank holds 360 litres. 5% of the water is used. How many litres are left?
  32. 32.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  33. 33.A price comes down by 25% and then comes down by 25% more. By what percent has it come down in all? =
  34. 34.A water tank holds 680 litres. 10% of the water is used. How many litres are left?
  35. 35.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  36. 36.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
  37. 37.A water tank holds 3920 litres. 30% of the water is used. How many litres are left?
  38. 38.A town has 1480 people. Its population grows by 10%. How many people live there now?
  39. 39.A water tank holds 2520 litres. 20% of the water is used. How many litres are left?
  40. 40.A water tank holds 1000 litres. 50% of the water is used. How many litres are left?

Answer key

  1. 6780
  2. 10
  3. 3298
  4. 5408
  5. 6162
  6. 435
  7. 2475
  8. 10
  9. 2130
  10. 4134
  11. 10
  12. 15
  13. 2352
  14. 2175
  15. 25
  16. 55
  17. 2944
  18. 1526
  19. 6076
  20. 2142
  21. 40
  22. 10
  23. 3432
  24. 1440
  25. 648
  26. 43.75
  27. 5
  28. 43
  29. 70
  30. 1320
  31. 342
  32. 19.25
  33. 43.75
  34. 612
  35. 37
  36. 110
  37. 2744
  38. 1628
  39. 2016
  40. 500

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