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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 255 · 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 water tank holds 3340 litres. 50% of the water is used. How many litres are left?
  2. 2.The price of a school bag changes from ₹1420 to ₹852. By what percent did it come down?
  3. 3.The price of a school bag changes from ₹220 to ₹286. By what percent did it go up?
  4. 4.A water tank holds 4360 litres. 30% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹2160 to ₹2268. By what percent did it go up?
  6. 6.The price of a school bag changes from ₹4720 to ₹2360. By what percent did it come down?
  7. 7.A shop sells 2160 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  8. 8.A water tank holds 2960 litres. 10% of the water is used. How many litres are left?
  9. 9.A water tank holds 1440 litres. 20% of the water is used. How many litres are left?
  10. 10.A shop sells 2160 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  11. 11.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  12. 12.The price of a bicycle is ₹3540. It goes up by 50%. What is the new price (in ₹)?
  13. 13.The price of a school bag changes from ₹2900 to ₹2320. By what percent did it come down?
  14. 14.The price of a bicycle is ₹540. It goes up by 50%. What is the new price (in ₹)?
  15. 15.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  16. 16.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  17. 17.A town has 4400 people. Its population grows by 25%. How many people live there now?
  18. 18.A price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
  19. 19.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  20. 20.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
  21. 21.A water tank holds 4360 litres. 50% of the water is used. How many litres are left?
  22. 22.A water tank holds 3540 litres. 20% of the water is used. How many litres are left?
  23. 23.A water tank holds 3680 litres. 20% of the water is used. How many litres are left?
  24. 24.A town has 4500 people. Its population grows by 50%. How many people live there now?
  25. 25.The price of a school bag changes from ₹640 to ₹544. By what percent did it come down?
  26. 26.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =
  27. 27.The price of a school bag changes from ₹740 to ₹777. By what percent did it go up?
  28. 28.A shop sells 3660 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  29. 29.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  30. 30.A town has 2820 people. Its population grows by 25%. How many people live there now?
  31. 31.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
  32. 32.The price of a school bag changes from ₹1780 to ₹2314. By what percent did it go up?
  33. 33.A water tank holds 520 litres. 40% of the water is used. How many litres are left?
  34. 34.A shop sells 3180 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  35. 35.A water tank holds 120 litres. 10% of the water is used. How many litres are left?
  36. 36.A town has 2600 people. Its population grows by 10%. How many people live there now?
  37. 37.The price of a school bag changes from ₹1400 to ₹1050. By what percent did it come down?
  38. 38.The price of a bicycle is ₹2480. It goes up by 10%. What is the new price (in ₹)?
  39. 39.A water tank holds 2520 litres. 30% of the water is used. How many litres are left?
  40. 40.A town has 3240 people. Its population grows by 5%. How many people live there now?

Answer key

  1. 1670
  2. 40
  3. 30
  4. 3052
  5. 5
  6. 50
  7. 2268
  8. 2664
  9. 1152
  10. 2376
  11. 36.25
  12. 5310
  13. 20
  14. 810
  15. 55
  16. 61
  17. 5500
  18. 49.5
  19. 38
  20. 42.5
  21. 2180
  22. 2832
  23. 2944
  24. 6750
  25. 15
  26. 55
  27. 5
  28. 4758
  29. 65
  30. 3525
  31. 40.5
  32. 30
  33. 312
  34. 3657
  35. 108
  36. 2860
  37. 25
  38. 2728
  39. 1764
  40. 3402

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