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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 412 · 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 school bag changes from ₹3060 to ₹2601. By what percent did it come down?
  2. 2.The price of a school bag changes from ₹480 to ₹336. By what percent did it come down?
  3. 3.The price of a bicycle is ₹1480. It goes up by 5%. What is the new price (in ₹)?
  4. 4.A town has 4640 people. Its population grows by 5%. How many people live there now?
  5. 5.The price of a school bag changes from ₹3720 to ₹4464. By what percent did it go up?
  6. 6.A water tank holds 240 litres. 30% of the water is used. How many litres are left?
  7. 7.A water tank holds 2460 litres. 15% of the water is used. How many litres are left?
  8. 8.A water tank holds 1460 litres. 10% of the water is used. How many litres are left?
  9. 9.The price of a bicycle is ₹3920. It goes up by 5%. What is the new price (in ₹)?
  10. 10.The price of a school bag changes from ₹400 to ₹420. By what percent did it go up?
  11. 11.A shop sells 3560 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  12. 12.The price of a school bag changes from ₹960 to ₹768. By what percent did it come down?
  13. 13.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  14. 14.A water tank holds 3000 litres. 40% of the water is used. How many litres are left?
  15. 15.A water tank holds 4440 litres. 5% of the water is used. How many litres are left?
  16. 16.The price of a school bag changes from ₹3140 to ₹3454. By what percent did it go up?
  17. 17.A town has 220 people. Its population grows by 25%. How many people live there now?
  18. 18.The price of a school bag changes from ₹580 to ₹754. By what percent did it go up?
  19. 19.The price of a school bag changes from ₹640 to ₹576. By what percent did it come down?
  20. 20.The price of a school bag changes from ₹920 to ₹690. By what percent did it come down?
  21. 21.The price of a bicycle is ₹2460. It goes up by 25%. What is the new price (in ₹)?
  22. 22.A water tank holds 4100 litres. 10% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹2120 to ₹1696. By what percent did it come down?
  24. 24.A shop sells 1900 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  25. 25.A water tank holds 3580 litres. 40% of the water is used. How many litres are left?
  26. 26.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  27. 27.A price comes down by 50% and then comes down by 20% more. By what percent has it come down in all? =
  28. 28.The price of a bicycle is ₹1460. It goes up by 5%. What is the new price (in ₹)?
  29. 29.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
  30. 30.A water tank holds 1540 litres. 30% of the water is used. How many litres are left?
  31. 31.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  32. 32.The price of a bicycle is ₹2780. It goes up by 50%. What is the new price (in ₹)?
  33. 33.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
  34. 34.A water tank holds 4740 litres. 30% of the water is used. How many litres are left?
  35. 35.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  36. 36.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  37. 37.A water tank holds 4220 litres. 20% of the water is used. How many litres are left?
  38. 38.A water tank holds 4100 litres. 15% of the water is used. How many litres are left?
  39. 39.A town has 2060 people. Its population grows by 5%. How many people live there now?
  40. 40.The price of a school bag changes from ₹780 to ₹585. By what percent did it come down?

Answer key

  1. 15
  2. 30
  3. 1554
  4. 4872
  5. 20
  6. 168
  7. 2091
  8. 1314
  9. 4116
  10. 5
  11. 3738
  12. 20
  13. 20.75
  14. 1800
  15. 4218
  16. 10
  17. 275
  18. 30
  19. 10
  20. 25
  21. 3075
  22. 3690
  23. 20
  24. 2850
  25. 2148
  26. 95
  27. 60
  28. 1533
  29. 19
  30. 1078
  31. 61
  32. 4170
  33. 56
  34. 3318
  35. 56.25
  36. 33.5
  37. 3376
  38. 3485
  39. 2163
  40. 25

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