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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 252 · 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 ₹3400 to ₹4250. By what percent did it go up?
  2. 2.A price comes down by 20% and then comes down by 10% more. By what percent has it come down in all? =
  3. 3.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
  4. 4.A water tank holds 1460 litres. 10% of the water is used. How many litres are left?
  5. 5.A water tank holds 3220 litres. 30% of the water is used. How many litres are left?
  6. 6.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  7. 7.The price of a bicycle is ₹2640. It goes up by 5%. What is the new price (in ₹)?
  8. 8.A water tank holds 2780 litres. 30% of the water is used. How many litres are left?
  9. 9.A water tank holds 1400 litres. 10% of the water is used. How many litres are left?
  10. 10.A water tank holds 3080 litres. 20% of the water is used. How many litres are left?
  11. 11.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  12. 12.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
  13. 13.A town has 4000 people. Its population grows by 30%. How many people live there now?
  14. 14.The price of a bicycle is ₹1320. It goes up by 25%. What is the new price (in ₹)?
  15. 15.The price of a school bag changes from ₹360 to ₹324. By what percent did it come down?
  16. 16.The price of a school bag changes from ₹1040 to ₹624. By what percent did it come down?
  17. 17.The price of a school bag changes from ₹4180 to ₹3553. By what percent did it come down?
  18. 18.A water tank holds 2620 litres. 5% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹4580 to ₹4809. By what percent did it go up?
  20. 20.A town has 3900 people. Its population grows by 30%. How many people live there now?
  21. 21.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  22. 22.The price of a school bag changes from ₹760 to ₹1140. By what percent did it go up?
  23. 23.The price of a school bag changes from ₹3220 to ₹2898. By what percent did it come down?
  24. 24.A shop sells 2820 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  25. 25.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  26. 26.The price of a bicycle is ₹3920. It goes up by 25%. What is the new price (in ₹)?
  27. 27.A water tank holds 4840 litres. 5% of the water is used. How many litres are left?
  28. 28.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  29. 29.The price of a bicycle is ₹4380. It goes up by 15%. What is the new price (in ₹)?
  30. 30.The price of a school bag changes from ₹800 to ₹880. By what percent did it go up?
  31. 31.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  32. 32.The price of a school bag changes from ₹4820 to ₹5543. By what percent did it go up?
  33. 33.The price of a bicycle is ₹2920. It goes up by 15%. What is the new price (in ₹)?
  34. 34.A water tank holds 180 litres. 10% of the water is used. How many litres are left?
  35. 35.A shop sells 3160 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  36. 36.The price of a school bag changes from ₹3260 to ₹3912. By what percent did it go up?
  37. 37.A water tank holds 3800 litres. 25% of the water is used. How many litres are left?
  38. 38.A water tank holds 3980 litres. 25% of the water is used. How many litres are left?
  39. 39.A shop sells 4540 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  40. 40.The price of a school bag changes from ₹800 to ₹760. By what percent did it come down?

Answer key

  1. 25
  2. 28
  3. 55
  4. 1314
  5. 2254
  6. 26.5
  7. 2772
  8. 1946
  9. 1260
  10. 2464
  11. 31.25
  12. 24
  13. 5200
  14. 1650
  15. 10
  16. 40
  17. 15
  18. 2489
  19. 5
  20. 5070
  21. 12.5
  22. 50
  23. 10
  24. 3384
  25. 61
  26. 4900
  27. 4598
  28. 52
  29. 5037
  30. 10
  31. 95
  32. 15
  33. 3358
  34. 162
  35. 3634
  36. 20
  37. 2850
  38. 2985
  39. 6356
  40. 5

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