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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 926 · 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 ₹2300 to ₹1955. By what percent did it come down?
  2. 2.A water tank holds 1560 litres. 15% of the water is used. How many litres are left?
  3. 3.A shop sells 4160 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  4. 4.The price of a school bag changes from ₹60 to ₹69. By what percent did it go up?
  5. 5.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  6. 6.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  7. 7.A price goes up by 20% and then goes up by 20% more. By what percent has it gone up in all? =
  8. 8.A water tank holds 2980 litres. 10% of the water is used. How many litres are left?
  9. 9.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
  10. 10.A water tank holds 4820 litres. 20% of the water is used. How many litres are left?
  11. 11.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
  12. 12.A town has 3620 people. Its population grows by 20%. How many people live there now?
  13. 13.A water tank holds 3700 litres. 25% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹4360 to ₹2616. By what percent did it come down?
  15. 15.The price of a school bag changes from ₹4480 to ₹5824. By what percent did it go up?
  16. 16.The price of a school bag changes from ₹3420 to ₹3249. By what percent did it come down?
  17. 17.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  18. 18.The price of a school bag changes from ₹2080 to ₹3120. By what percent did it go up?
  19. 19.A water tank holds 200 litres. 50% of the water is used. How many litres are left?
  20. 20.A water tank holds 2740 litres. 15% of the water is used. How many litres are left?
  21. 21.The price of a bicycle is ₹3220. It goes up by 25%. What is the new price (in ₹)?
  22. 22.The price of a school bag changes from ₹4880 to ₹7320. By what percent did it go up?
  23. 23.The price of a bicycle is ₹3420. It goes up by 40%. What is the new price (in ₹)?
  24. 24.A water tank holds 4760 litres. 15% of the water is used. How many litres are left?
  25. 25.The price of a bicycle is ₹4020. It goes up by 30%. What is the new price (in ₹)?
  26. 26.The price of a school bag changes from ₹4280 to ₹5564. By what percent did it go up?
  27. 27.The price of a school bag changes from ₹4540 to ₹4767. By what percent did it go up?
  28. 28.A town has 4540 people. Its population grows by 25%. How many people live there now?
  29. 29.The price of a bicycle is ₹2000. It goes up by 10%. What is the new price (in ₹)?
  30. 30.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  31. 31.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  32. 32.A water tank holds 1940 litres. 20% of the water is used. How many litres are left?
  33. 33.A shop sells 4160 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  34. 34.The price of a school bag changes from ₹1760 to ₹1408. By what percent did it come down?
  35. 35.A water tank holds 2580 litres. 50% of the water is used. How many litres are left?
  36. 36.A town has 4220 people. Its population grows by 20%. How many people live there now?
  37. 37.A water tank holds 1820 litres. 15% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹380 to ₹494. By what percent did it go up?
  39. 39.A price comes down by 25% and then comes down by 25% more. By what percent has it come down in all? =
  40. 40.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =

Answer key

  1. 15
  2. 1326
  3. 4576
  4. 15
  5. 47.5
  6. 75
  7. 44
  8. 2682
  9. 57.5
  10. 3856
  11. 33.5
  12. 4344
  13. 2775
  14. 40
  15. 30
  16. 5
  17. 52.5
  18. 50
  19. 100
  20. 2329
  21. 4025
  22. 50
  23. 4788
  24. 4046
  25. 5226
  26. 30
  27. 5
  28. 5675
  29. 2200
  30. 46
  31. 70
  32. 1552
  33. 4784
  34. 20
  35. 1290
  36. 5064
  37. 1547
  38. 30
  39. 43.75
  40. 32.25

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