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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 129 · 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 bicycle is ₹2720. It goes up by 10%. What is the new price (in ₹)?
  2. 2.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  3. 3.A shop sells 3380 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  4. 4.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  5. 5.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
  6. 6.The price of a school bag changes from ₹1860 to ₹2046. By what percent did it go up?
  7. 7.A water tank holds 2380 litres. 10% of the water is used. How many litres are left?
  8. 8.A water tank holds 400 litres. 20% of the water is used. How many litres are left?
  9. 9.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  10. 10.A shop sells 4020 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  11. 11.The price of a bicycle is ₹3460. It goes up by 10%. What is the new price (in ₹)?
  12. 12.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  13. 13.A town has 1640 people. Its population grows by 50%. How many people live there now?
  14. 14.A water tank holds 3280 litres. 25% of the water is used. How many litres are left?
  15. 15.The price of a bicycle is ₹5000. It goes up by 20%. What is the new price (in ₹)?
  16. 16.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  17. 17.A water tank holds 3960 litres. 25% of the water is used. How many litres are left?
  18. 18.The price of a bicycle is ₹2240. It goes up by 30%. What is the new price (in ₹)?
  19. 19.A water tank holds 4840 litres. 30% of the water is used. How many litres are left?
  20. 20.The price of a bicycle is ₹280. It goes up by 5%. What is the new price (in ₹)?
  21. 21.A shop sells 1680 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  22. 22.A water tank holds 2040 litres. 20% of the water is used. How many litres are left?
  23. 23.A water tank holds 2840 litres. 10% of the water is used. How many litres are left?
  24. 24.A water tank holds 540 litres. 5% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹3540 to ₹4071. By what percent did it go up?
  26. 26.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  27. 27.The price of a school bag changes from ₹820 to ₹615. By what percent did it come down?
  28. 28.The price of a school bag changes from ₹4380 to ₹5256. By what percent did it go up?
  29. 29.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
  30. 30.A price goes up by 25% and then comes down by 15%. By what percent has it gone up in all? =
  31. 31.A water tank holds 560 litres. 30% of the water is used. How many litres are left?
  32. 32.A town has 1540 people. Its population grows by 20%. How many people live there now?
  33. 33.A water tank holds 4600 litres. 15% of the water is used. How many litres are left?
  34. 34.A town has 820 people. Its population grows by 40%. How many people live there now?
  35. 35.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
  36. 36.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  37. 37.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  38. 38.A shop sells 3400 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  39. 39.The price of a school bag changes from ₹4740 to ₹6636. By what percent did it go up?
  40. 40.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =

Answer key

  1. 2992
  2. 36.5
  3. 3887
  4. 15.5
  5. 42.5
  6. 10
  7. 2142
  8. 320
  9. 80
  10. 4221
  11. 3806
  12. 17
  13. 2460
  14. 2460
  15. 6000
  16. 43
  17. 2970
  18. 2912
  19. 3388
  20. 294
  21. 2016
  22. 1632
  23. 2556
  24. 513
  25. 15
  26. 26.5
  27. 25
  28. 20
  29. 47
  30. 6.25
  31. 392
  32. 1848
  33. 3910
  34. 1148
  35. 65
  36. 36.5
  37. 32
  38. 3910
  39. 40
  40. 62.5

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