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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 994 · 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 comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  2. 2.The price of a school bag changes from ₹1140 to ₹1083. By what percent did it come down?
  3. 3.A water tank holds 1420 litres. 30% of the water is used. How many litres are left?
  4. 4.A water tank holds 4080 litres. 15% of the water is used. How many litres are left?
  5. 5.The price of a bicycle is ₹4120. It goes up by 5%. What is the new price (in ₹)?
  6. 6.A shop sells 3380 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  7. 7.A shop sells 4740 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  8. 8.The price of a school bag changes from ₹1560 to ₹1950. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹4120 to ₹4326. By what percent did it go up?
  10. 10.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  11. 11.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  12. 12.The price of a school bag changes from ₹2580 to ₹3096. By what percent did it go up?
  13. 13.A water tank holds 2940 litres. 20% of the water is used. How many litres are left?
  14. 14.A shop sells 4740 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  15. 15.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  16. 16.A shop sells 60 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  17. 17.The price of a bicycle is ₹4300. It goes up by 10%. What is the new price (in ₹)?
  18. 18.A water tank holds 2980 litres. 50% of the water is used. How many litres are left?
  19. 19.A water tank holds 2120 litres. 5% of the water is used. How many litres are left?
  20. 20.A price goes up by 50% and then comes down by 25%. By what percent has it gone up in all? =
  21. 21.The price of a school bag changes from ₹480 to ₹240. By what percent did it come down?
  22. 22.The price of a school bag changes from ₹2840 to ₹3692. By what percent did it go up?
  23. 23.A water tank holds 4420 litres. 5% of the water is used. How many litres are left?
  24. 24.A water tank holds 2540 litres. 20% of the water is used. How many litres are left?
  25. 25.A shop sells 4360 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  26. 26.A water tank holds 4380 litres. 20% of the water is used. How many litres are left?
  27. 27.A water tank holds 4560 litres. 50% of the water is used. How many litres are left?
  28. 28.The price of a school bag changes from ₹2060 to ₹1648. By what percent did it come down?
  29. 29.The price of a school bag changes from ₹1720 to ₹1892. By what percent did it go up?
  30. 30.The price of a school bag changes from ₹500 to ₹750. By what percent did it go up?
  31. 31.A water tank holds 4480 litres. 5% of the water is used. How many litres are left?
  32. 32.A price comes down by 30% and then comes down by 50% more. By what percent has it come down in all? =
  33. 33.The price of a school bag changes from ₹440 to ₹418. By what percent did it come down?
  34. 34.The price of a school bag changes from ₹2300 to ₹2875. By what percent did it go up?
  35. 35.The price of a bicycle is ₹300. It goes up by 20%. What is the new price (in ₹)?
  36. 36.The price of a school bag changes from ₹3840 to ₹4032. By what percent did it go up?
  37. 37.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  38. 38.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  39. 39.A shop sells 5000 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  40. 40.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =

Answer key

  1. 19.25
  2. 5
  3. 994
  4. 3468
  5. 4326
  6. 3718
  7. 4977
  8. 25
  9. 5
  10. 37.5
  11. 26
  12. 20
  13. 2352
  14. 5925
  15. 52.5
  16. 78
  17. 4730
  18. 1490
  19. 2014
  20. 12.5
  21. 50
  22. 30
  23. 4199
  24. 2032
  25. 4796
  26. 3504
  27. 2280
  28. 20
  29. 10
  30. 50
  31. 4256
  32. 65
  33. 5
  34. 25
  35. 360
  36. 5
  37. 33
  38. 15.5
  39. 6500
  40. 32.5

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