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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 574 · 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 price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  2. 2.The price of a school bag changes from ₹4160 to ₹6240. By what percent did it go up?
  3. 3.The price of a bicycle is ₹4340. It goes up by 50%. What is the new price (in ₹)?
  4. 4.The price of a school bag changes from ₹2740 to ₹4110. By what percent did it go up?
  5. 5.A shop sells 2500 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  6. 6.The price of a bicycle is ₹4080. It goes up by 25%. What is the new price (in ₹)?
  7. 7.The price of a school bag changes from ₹500 to ₹450. By what percent did it come down?
  8. 8.The price of a school bag changes from ₹3460 to ₹3114. By what percent did it come down?
  9. 9.A water tank holds 620 litres. 5% of the water is used. How many litres are left?
  10. 10.A water tank holds 2300 litres. 40% of the water is used. How many litres are left?
  11. 11.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  12. 12.The price of a school bag changes from ₹4260 to ₹2130. By what percent did it come down?
  13. 13.A town has 340 people. Its population grows by 5%. How many people live there now?
  14. 14.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
  15. 15.A shop sells 500 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  16. 16.The price of a school bag changes from ₹1840 to ₹1748. By what percent did it come down?
  17. 17.A water tank holds 1100 litres. 20% of the water is used. How many litres are left?
  18. 18.A town has 1820 people. Its population grows by 25%. How many people live there now?
  19. 19.A shop sells 4560 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  20. 20.A town has 4880 people. Its population grows by 20%. How many people live there now?
  21. 21.The price of a bicycle is ₹2040. It goes up by 20%. What is the new price (in ₹)?
  22. 22.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  23. 23.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  24. 24.A water tank holds 3460 litres. 40% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹3160 to ₹4424. By what percent did it go up?
  26. 26.The price of a school bag changes from ₹3400 to ₹3230. By what percent did it come down?
  27. 27.A shop sells 4740 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  28. 28.The price of a school bag changes from ₹4060 to ₹3857. By what percent did it come down?
  29. 29.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  30. 30.A water tank holds 1860 litres. 20% of the water is used. How many litres are left?
  31. 31.The price of a bicycle is ₹1680. It goes up by 5%. What is the new price (in ₹)?
  32. 32.A shop sells 2460 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  33. 33.A town has 2360 people. Its population grows by 20%. How many people live there now?
  34. 34.A price comes down by 30% and then comes down by 30% more. By what percent has it come down in all? =
  35. 35.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  36. 36.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
  37. 37.A water tank holds 4780 litres. 50% of the water is used. How many litres are left?
  38. 38.A water tank holds 1080 litres. 20% of the water is used. How many litres are left?
  39. 39.A shop sells 1860 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  40. 40.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =

Answer key

  1. 47
  2. 50
  3. 6510
  4. 50
  5. 2750
  6. 5100
  7. 10
  8. 10
  9. 589
  10. 1380
  11. 36.25
  12. 50
  13. 357
  14. 49
  15. 550
  16. 5
  17. 880
  18. 2275
  19. 5928
  20. 5856
  21. 2448
  22. 46
  23. 70
  24. 2076
  25. 40
  26. 5
  27. 4977
  28. 5
  29. 32.5
  30. 1488
  31. 1764
  32. 3690
  33. 2832
  34. 51
  35. 36.5
  36. 40.5
  37. 2390
  38. 864
  39. 1953
  40. 57.5

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