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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 638 · 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 4940 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  2. 2.The price of a school bag changes from ₹2400 to ₹2280. By what percent did it come down?
  3. 3.The price of a bicycle is ₹1740. It goes up by 25%. What is the new price (in ₹)?
  4. 4.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  5. 5.The price of a bicycle is ₹2380. It goes up by 50%. What is the new price (in ₹)?
  6. 6.A town has 880 people. Its population grows by 50%. How many people live there now?
  7. 7.The price of a school bag changes from ₹1780 to ₹1424. By what percent did it come down?
  8. 8.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
  9. 9.The price of a school bag changes from ₹1440 to ₹1800. By what percent did it go up?
  10. 10.A water tank holds 1720 litres. 25% of the water is used. How many litres are left?
  11. 11.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  12. 12.A price goes up by 25% and then comes down by 15%. By what percent has it gone up in all? =
  13. 13.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  14. 14.The price of a school bag changes from ₹4300 to ₹4515. By what percent did it go up?
  15. 15.The price of a school bag changes from ₹2780 to ₹3892. By what percent did it go up?
  16. 16.The price of a school bag changes from ₹3880 to ₹1940. By what percent did it come down?
  17. 17.The price of a bicycle is ₹2400. It goes up by 40%. What is the new price (in ₹)?
  18. 18.The price of a school bag changes from ₹3800 to ₹3040. By what percent did it come down?
  19. 19.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
  20. 20.A water tank holds 3960 litres. 50% of the water is used. How many litres are left?
  21. 21.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  22. 22.The price of a bicycle is ₹4780. It goes up by 20%. What is the new price (in ₹)?
  23. 23.The price of a bicycle is ₹4860. It goes up by 15%. What is the new price (in ₹)?
  24. 24.A shop sells 4780 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  25. 25.A shop sells 740 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  26. 26.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
  27. 27.The price of a school bag changes from ₹2580 to ₹1935. By what percent did it come down?
  28. 28.A shop sells 3400 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  29. 29.A water tank holds 900 litres. 5% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹1060 to ₹848. By what percent did it come down?
  31. 31.The price of a school bag changes from ₹4240 to ₹5512. By what percent did it go up?
  32. 32.The price of a school bag changes from ₹680 to ₹748. By what percent did it go up?
  33. 33.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  34. 34.A water tank holds 1020 litres. 20% of the water is used. How many litres are left?
  35. 35.A water tank holds 1540 litres. 40% of the water is used. How many litres are left?
  36. 36.The price of a school bag changes from ₹4820 to ₹3374. By what percent did it come down?
  37. 37.A price comes down by 50% and then comes down by 20% more. By what percent has it come down in all? =
  38. 38.A water tank holds 4200 litres. 10% of the water is used. How many litres are left?
  39. 39.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  40. 40.A shop sells 140 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?

Answer key

  1. 5681
  2. 5
  3. 2175
  4. 35
  5. 3570
  6. 1320
  7. 20
  8. 24
  9. 25
  10. 1290
  11. 14.5
  12. 6.25
  13. 12.5
  14. 5
  15. 40
  16. 50
  17. 3360
  18. 20
  19. 75
  20. 1980
  21. 80
  22. 5736
  23. 5589
  24. 6214
  25. 1110
  26. 96
  27. 25
  28. 3740
  29. 855
  30. 20
  31. 30
  32. 10
  33. 95
  34. 816
  35. 924
  36. 30
  37. 60
  38. 3780
  39. 43.75
  40. 168

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