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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 8 · 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 3620 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  2. 2.The price of a school bag changes from ₹3140 to ₹3297. By what percent did it go up?
  3. 3.A shop sells 2640 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  4. 4.The price of a bicycle is ₹400. It goes up by 40%. What is the new price (in ₹)?
  5. 5.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  6. 6.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  7. 7.A shop sells 4800 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  8. 8.A town has 4120 people. Its population grows by 50%. How many people live there now?
  9. 9.The price of a school bag changes from ₹2900 to ₹2755. By what percent did it come down?
  10. 10.A water tank holds 2160 litres. 10% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹3020 to ₹2567. By what percent did it come down?
  12. 12.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  13. 13.A water tank holds 2840 litres. 5% of the water is used. How many litres are left?
  14. 14.A water tank holds 3720 litres. 40% of the water is used. How many litres are left?
  15. 15.A water tank holds 1560 litres. 50% of the water is used. How many litres are left?
  16. 16.The price of a school bag changes from ₹4820 to ₹5784. By what percent did it go up?
  17. 17.A water tank holds 4260 litres. 15% of the water is used. How many litres are left?
  18. 18.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  19. 19.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  20. 20.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
  21. 21.A water tank holds 2600 litres. 40% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹1480 to ₹888. By what percent did it come down?
  23. 23.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  24. 24.A water tank holds 1740 litres. 10% of the water is used. How many litres are left?
  25. 25.A water tank holds 1640 litres. 5% of the water is used. How many litres are left?
  26. 26.The price of a school bag changes from ₹2240 to ₹2912. By what percent did it go up?
  27. 27.The price of a school bag changes from ₹4580 to ₹4809. By what percent did it go up?
  28. 28.The price of a school bag changes from ₹3780 to ₹3969. By what percent did it go up?
  29. 29.A water tank holds 900 litres. 15% of the water is used. How many litres are left?
  30. 30.A water tank holds 1340 litres. 15% of the water is used. How many litres are left?
  31. 31.A price comes down by 20% and then comes down by 25% more. By what percent has it come down in all? =
  32. 32.The price of a bicycle is ₹1740. It goes up by 25%. What is the new price (in ₹)?
  33. 33.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  34. 34.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  35. 35.A water tank holds 4220 litres. 5% of the water is used. How many litres are left?
  36. 36.A water tank holds 880 litres. 30% of the water is used. How many litres are left?
  37. 37.A water tank holds 3840 litres. 10% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹3220 to ₹4186. By what percent did it go up?
  39. 39.The price of a bicycle is ₹4760. It goes up by 15%. What is the new price (in ₹)?
  40. 40.A water tank holds 3880 litres. 25% of the water is used. How many litres are left?

Answer key

  1. 4706
  2. 5
  3. 3960
  4. 560
  5. 70
  6. 28
  7. 6720
  8. 6180
  9. 5
  10. 1944
  11. 15
  12. 47
  13. 2698
  14. 2232
  15. 780
  16. 20
  17. 3621
  18. 61
  19. 32.25
  20. 26
  21. 1560
  22. 40
  23. 37.5
  24. 1566
  25. 1558
  26. 30
  27. 5
  28. 5
  29. 765
  30. 1139
  31. 40
  32. 2175
  33. 5
  34. 20.75
  35. 4009
  36. 616
  37. 3456
  38. 30
  39. 5474
  40. 2910

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