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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 443 · 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 shop sells 1460 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  2. 2.The price of a bicycle is ₹4780. It goes up by 20%. What is the new price (in ₹)?
  3. 3.A shop sells 1640 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  4. 4.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  5. 5.The price of a bicycle is ₹3740. It goes up by 20%. What is the new price (in ₹)?
  6. 6.A town has 2000 people. Its population grows by 15%. How many people live there now?
  7. 7.The price of a school bag changes from ₹4580 to ₹4351. By what percent did it come down?
  8. 8.The price of a school bag changes from ₹3020 to ₹1510. By what percent did it come down?
  9. 9.The price of a school bag changes from ₹580 to ₹754. By what percent did it go up?
  10. 10.The price of a school bag changes from ₹460 to ₹506. By what percent did it go up?
  11. 11.A water tank holds 2980 litres. 30% of the water is used. How many litres are left?
  12. 12.The price of a school bag changes from ₹3620 to ₹1810. By what percent did it come down?
  13. 13.The price of a bicycle is ₹4560. It goes up by 15%. What is the new price (in ₹)?
  14. 14.The price of a school bag changes from ₹2800 to ₹1400. By what percent did it come down?
  15. 15.A water tank holds 3020 litres. 25% of the water is used. How many litres are left?
  16. 16.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
  17. 17.A town has 4200 people. Its population grows by 20%. How many people live there now?
  18. 18.The price of a bicycle is ₹120. It goes up by 10%. What is the new price (in ₹)?
  19. 19.A water tank holds 4200 litres. 25% of the water is used. How many litres are left?
  20. 20.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  21. 21.A town has 3020 people. Its population grows by 40%. How many people live there now?
  22. 22.A water tank holds 2660 litres. 5% of the water is used. How many litres are left?
  23. 23.A water tank holds 4560 litres. 15% of the water is used. How many litres are left?
  24. 24.A town has 1020 people. Its population grows by 25%. How many people live there now?
  25. 25.A shop sells 2720 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  26. 26.The price of a school bag changes from ₹4280 to ₹6420. By what percent did it go up?
  27. 27.A shop sells 1340 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  28. 28.A water tank holds 2740 litres. 15% of the water is used. How many litres are left?
  29. 29.A water tank holds 3920 litres. 15% of the water is used. How many litres are left?
  30. 30.A water tank holds 1740 litres. 30% of the water is used. How many litres are left?
  31. 31.A town has 2300 people. Its population grows by 30%. How many people live there now?
  32. 32.A town has 1020 people. Its population grows by 20%. How many people live there now?
  33. 33.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  34. 34.The price of a bicycle is ₹120. It goes up by 5%. What is the new price (in ₹)?
  35. 35.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  36. 36.A water tank holds 3760 litres. 40% of the water is used. How many litres are left?
  37. 37.A water tank holds 4500 litres. 50% of the water is used. How many litres are left?
  38. 38.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  39. 39.A water tank holds 2660 litres. 15% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹3640 to ₹3276. By what percent did it come down?

Answer key

  1. 1533
  2. 5736
  3. 1804
  4. 32
  5. 4488
  6. 2300
  7. 5
  8. 50
  9. 30
  10. 10
  11. 2086
  12. 50
  13. 5244
  14. 50
  15. 2265
  16. 110
  17. 5040
  18. 132
  19. 3150
  20. 27.5
  21. 4228
  22. 2527
  23. 3876
  24. 1275
  25. 4080
  26. 50
  27. 1742
  28. 2329
  29. 3332
  30. 1218
  31. 2990
  32. 1224
  33. 28.75
  34. 126
  35. 62.5
  36. 2256
  37. 2250
  38. 12.5
  39. 2261
  40. 10

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