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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 410 · 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 ₹4180 to ₹3553. By what percent did it come down?
  2. 2.The price of a school bag changes from ₹3260 to ₹3586. By what percent did it go up?
  3. 3.The price of a bicycle is ₹500. It goes up by 5%. What is the new price (in ₹)?
  4. 4.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  5. 5.A water tank holds 1680 litres. 30% of the water is used. How many litres are left?
  6. 6.A water tank holds 460 litres. 10% of the water is used. How many litres are left?
  7. 7.A water tank holds 2600 litres. 50% of the water is used. How many litres are left?
  8. 8.The price of a bicycle is ₹1760. It goes up by 30%. What is the new price (in ₹)?
  9. 9.A town has 2680 people. Its population grows by 30%. How many people live there now?
  10. 10.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  11. 11.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  12. 12.A town has 4020 people. Its population grows by 10%. How many people live there now?
  13. 13.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  14. 14.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  15. 15.A price comes down by 20% and then comes down by 20% more. By what percent has it come down in all? =
  16. 16.A water tank holds 2700 litres. 5% of the water is used. How many litres are left?
  17. 17.A water tank holds 3520 litres. 40% of the water is used. How many litres are left?
  18. 18.A water tank holds 1780 litres. 5% of the water is used. How many litres are left?
  19. 19.A water tank holds 2540 litres. 25% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹4340 to ₹5208. By what percent did it go up?
  21. 21.A water tank holds 4980 litres. 5% of the water is used. How many litres are left?
  22. 22.A town has 560 people. Its population grows by 15%. How many people live there now?
  23. 23.The price of a school bag changes from ₹1040 to ₹988. By what percent did it come down?
  24. 24.The price of a school bag changes from ₹4280 to ₹4494. By what percent did it go up?
  25. 25.The price of a bicycle is ₹1120. It goes up by 5%. What is the new price (in ₹)?
  26. 26.A town has 480 people. Its population grows by 40%. How many people live there now?
  27. 27.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  28. 28.A water tank holds 2280 litres. 15% of the water is used. How many litres are left?
  29. 29.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  30. 30.The price of a school bag changes from ₹1260 to ₹1323. By what percent did it go up?
  31. 31.A town has 140 people. Its population grows by 30%. How many people live there now?
  32. 32.The price of a school bag changes from ₹2980 to ₹3874. By what percent did it go up?
  33. 33.A water tank holds 860 litres. 30% of the water is used. How many litres are left?
  34. 34.The price of a bicycle is ₹940. It goes up by 10%. What is the new price (in ₹)?
  35. 35.A shop sells 3620 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  36. 36.The price of a bicycle is ₹4660. It goes up by 25%. What is the new price (in ₹)?
  37. 37.A water tank holds 2680 litres. 15% of the water is used. How many litres are left?
  38. 38.The price of a bicycle is ₹2820. It goes up by 5%. What is the new price (in ₹)?
  39. 39.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  40. 40.A town has 440 people. Its population grows by 10%. How many people live there now?

Answer key

  1. 15
  2. 10
  3. 525
  4. 57.5
  5. 1176
  6. 414
  7. 1300
  8. 2288
  9. 3484
  10. 80
  11. 43.75
  12. 4422
  13. 57.5
  14. 32
  15. 36
  16. 2565
  17. 2112
  18. 1691
  19. 1905
  20. 20
  21. 4731
  22. 644
  23. 5
  24. 5
  25. 1176
  26. 672
  27. 27.5
  28. 1938
  29. 62.5
  30. 5
  31. 182
  32. 30
  33. 602
  34. 1034
  35. 5430
  36. 5825
  37. 2278
  38. 2961
  39. 33
  40. 484

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