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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 256 · 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 ₹2700 to ₹1620. By what percent did it come down?
  2. 2.A shop sells 4400 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  3. 3.The price of a school bag changes from ₹4460 to ₹5352. By what percent did it go up?
  4. 4.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
  5. 5.A price comes down by 50% and then comes down by 20% more. By what percent has it come down in all? =
  6. 6.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  7. 7.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  8. 8.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  9. 9.The price of a school bag changes from ₹3540 to ₹3894. By what percent did it go up?
  10. 10.A town has 3360 people. Its population grows by 20%. How many people live there now?
  11. 11.The price of a school bag changes from ₹2780 to ₹2085. By what percent did it come down?
  12. 12.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  13. 13.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  14. 14.A water tank holds 2100 litres. 25% of the water is used. How many litres are left?
  15. 15.A town has 180 people. Its population grows by 5%. How many people live there now?
  16. 16.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  17. 17.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  18. 18.The price of a school bag changes from ₹1160 to ₹1218. By what percent did it go up?
  19. 19.The price of a bicycle is ₹3080. It goes up by 10%. What is the new price (in ₹)?
  20. 20.The price of a bicycle is ₹360. It goes up by 25%. What is the new price (in ₹)?
  21. 21.The price of a bicycle is ₹4960. It goes up by 30%. What is the new price (in ₹)?
  22. 22.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
  23. 23.The price of a school bag changes from ₹2420 to ₹2783. By what percent did it go up?
  24. 24.The price of a school bag changes from ₹3720 to ₹4464. By what percent did it go up?
  25. 25.A water tank holds 1340 litres. 5% of the water is used. How many litres are left?
  26. 26.A water tank holds 4500 litres. 30% of the water is used. How many litres are left?
  27. 27.A shop sells 4100 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  28. 28.A price comes down by 30% and then comes down by 50% more. By what percent has it come down in all? =
  29. 29.The price of a bicycle is ₹1420. It goes up by 5%. What is the new price (in ₹)?
  30. 30.The price of a school bag changes from ₹760 to ₹722. By what percent did it come down?
  31. 31.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  32. 32.A town has 2260 people. Its population grows by 10%. How many people live there now?
  33. 33.A water tank holds 1760 litres. 50% of the water is used. How many litres are left?
  34. 34.A shop sells 920 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  35. 35.The price of a school bag changes from ₹2440 to ₹2806. By what percent did it go up?
  36. 36.A water tank holds 1400 litres. 20% of the water is used. How many litres are left?
  37. 37.A water tank holds 1820 litres. 10% of the water is used. How many litres are left?
  38. 38.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  39. 39.The price of a bicycle is ₹2140. It goes up by 5%. What is the new price (in ₹)?
  40. 40.A price comes down by 20% and then comes down by 20% more. By what percent has it come down in all? =

Answer key

  1. 40
  2. 5500
  3. 20
  4. 56
  5. 60
  6. 49.5
  7. 58
  8. 23.5
  9. 10
  10. 4032
  11. 25
  12. 40.5
  13. 61
  14. 1575
  15. 189
  16. 17
  17. 82
  18. 5
  19. 3388
  20. 450
  21. 6448
  22. 26
  23. 15
  24. 20
  25. 1273
  26. 3150
  27. 4510
  28. 65
  29. 1491
  30. 5
  31. 43
  32. 2486
  33. 880
  34. 1288
  35. 15
  36. 1120
  37. 1638
  38. 26.5
  39. 2247
  40. 36

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