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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 177 · 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 4020 litres. 5% of the water is used. How many litres are left?
  2. 2.The price of a bicycle is ₹260. It goes up by 50%. What is the new price (in ₹)?
  3. 3.A water tank holds 4280 litres. 20% of the water is used. How many litres are left?
  4. 4.A water tank holds 3420 litres. 40% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹4360 to ₹3488. By what percent did it come down?
  6. 6.The price of a school bag changes from ₹1200 to ₹720. By what percent did it come down?
  7. 7.The price of a school bag changes from ₹1440 to ₹1728. By what percent did it go up?
  8. 8.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  9. 9.A water tank holds 4260 litres. 25% of the water is used. How many litres are left?
  10. 10.A town has 3180 people. Its population grows by 30%. How many people live there now?
  11. 11.A water tank holds 4440 litres. 10% of the water is used. How many litres are left?
  12. 12.A water tank holds 2540 litres. 20% of the water is used. How many litres are left?
  13. 13.The price of a school bag changes from ₹1240 to ₹868. By what percent did it come down?
  14. 14.The price of a school bag changes from ₹600 to ₹720. By what percent did it go up?
  15. 15.The price of a bicycle is ₹4180. It goes up by 25%. What is the new price (in ₹)?
  16. 16.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  17. 17.The price of a bicycle is ₹3820. It goes up by 5%. What is the new price (in ₹)?
  18. 18.A water tank holds 1120 litres. 30% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹1440 to ₹1800. By what percent did it go up?
  20. 20.The price of a school bag changes from ₹560 to ₹672. By what percent did it go up?
  21. 21.A water tank holds 1680 litres. 25% of the water is used. How many litres are left?
  22. 22.A water tank holds 2780 litres. 50% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹780 to ₹663. By what percent did it come down?
  24. 24.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  25. 25.A shop sells 1500 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  26. 26.A town has 1640 people. Its population grows by 50%. How many people live there now?
  27. 27.The price of a school bag changes from ₹3000 to ₹3150. By what percent did it go up?
  28. 28.A price comes down by 25% and then comes down by 20% more. By what percent has it come down in all? =
  29. 29.A price comes down by 20% and then comes down by 10% more. By what percent has it come down in all? =
  30. 30.The price of a school bag changes from ₹2440 to ₹3416. By what percent did it go up?
  31. 31.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  32. 32.A water tank holds 4920 litres. 30% of the water is used. How many litres are left?
  33. 33.A shop sells 580 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  34. 34.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  35. 35.The price of a bicycle is ₹1400. It goes up by 40%. What is the new price (in ₹)?
  36. 36.A water tank holds 3160 litres. 30% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹440 to ₹660. By what percent did it go up?
  38. 38.A water tank holds 1480 litres. 25% of the water is used. How many litres are left?
  39. 39.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  40. 40.A town has 1000 people. Its population grows by 40%. How many people live there now?

Answer key

  1. 3819
  2. 390
  3. 3424
  4. 2052
  5. 20
  6. 40
  7. 20
  8. 12.5
  9. 3195
  10. 4134
  11. 3996
  12. 2032
  13. 30
  14. 20
  15. 5225
  16. 21
  17. 4011
  18. 784
  19. 25
  20. 20
  21. 1260
  22. 1390
  23. 15
  24. 28
  25. 2250
  26. 2460
  27. 5
  28. 40
  29. 28
  30. 40
  31. 37.5
  32. 3444
  33. 812
  34. 19.25
  35. 1960
  36. 2212
  37. 50
  38. 1110
  39. 23.5
  40. 1400

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