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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 475 · 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 ₹420. It goes up by 25%. What is the new price (in ₹)?
  2. 2.The price of a bicycle is ₹4740. It goes up by 5%. What is the new price (in ₹)?
  3. 3.The price of a school bag changes from ₹4080 to ₹3060. By what percent did it come down?
  4. 4.A water tank holds 3280 litres. 5% of the water is used. How many litres are left?
  5. 5.A shop sells 4080 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  6. 6.A shop sells 4680 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  7. 7.A town has 4300 people. Its population grows by 50%. How many people live there now?
  8. 8.A price comes down by 20% and then comes down by 20% more. By what percent has it come down in all? =
  9. 9.A town has 1860 people. Its population grows by 15%. How many people live there now?
  10. 10.The price of a school bag changes from ₹3920 to ₹3724. By what percent did it come down?
  11. 11.A shop sells 3420 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  12. 12.A shop sells 2800 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  13. 13.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  14. 14.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  15. 15.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  16. 16.A price goes up by 10% 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 ₹2560 to ₹2304. By what percent did it come down?
  18. 18.The price of a bicycle is ₹920. It goes up by 10%. What is the new price (in ₹)?
  19. 19.A shop sells 1200 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  20. 20.A water tank holds 4320 litres. 40% of the water is used. How many litres are left?
  21. 21.A water tank holds 760 litres. 10% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹2420 to ₹2662. By what percent did it go up?
  23. 23.The price of a school bag changes from ₹580 to ₹638. By what percent did it go up?
  24. 24.The price of a school bag changes from ₹3900 to ₹4875. By what percent did it go up?
  25. 25.A shop sells 4460 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  26. 26.A water tank holds 2640 litres. 10% of the water is used. How many litres are left?
  27. 27.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
  28. 28.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  29. 29.A water tank holds 940 litres. 25% of the water is used. How many litres are left?
  30. 30.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  31. 31.A price goes up by 50% and then comes down by 25%. By what percent has it gone up in all? =
  32. 32.A town has 4600 people. Its population grows by 50%. How many people live there now?
  33. 33.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
  34. 34.A town has 4960 people. Its population grows by 10%. How many people live there now?
  35. 35.A town has 60 people. Its population grows by 50%. How many people live there now?
  36. 36.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  37. 37.A price comes down by 20% and then comes down by 10% more. By what percent has it come down in all? =
  38. 38.A shop sells 4640 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  39. 39.The price of a school bag changes from ₹4960 to ₹3720. By what percent did it come down?
  40. 40.The price of a school bag changes from ₹4760 to ₹5950. By what percent did it go up?

Answer key

  1. 525
  2. 4977
  3. 25
  4. 3116
  5. 4488
  6. 5148
  7. 6450
  8. 36
  9. 2139
  10. 5
  11. 3762
  12. 3360
  13. 43
  14. 46
  15. 2
  16. 32
  17. 10
  18. 1012
  19. 1320
  20. 2592
  21. 684
  22. 10
  23. 10
  24. 25
  25. 5352
  26. 2376
  27. 49
  28. 82
  29. 705
  30. 47
  31. 12.5
  32. 6900
  33. 14.5
  34. 5456
  35. 90
  36. 58
  37. 28
  38. 4872
  39. 25
  40. 25

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