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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 806 · 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 town has 1300 people. Its population grows by 25%. How many people live there now?
  2. 2.The price of a school bag changes from ₹1120 to ₹1344. By what percent did it go up?
  3. 3.The price of a school bag changes from ₹4080 to ₹2448. By what percent did it come down?
  4. 4.A water tank holds 2060 litres. 25% of the water is used. How many litres are left?
  5. 5.A shop sells 1080 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  6. 6.A shop sells 4760 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  7. 7.The price of a school bag changes from ₹2680 to ₹2144. By what percent did it come down?
  8. 8.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  9. 9.The price of a bicycle is ₹2360. It goes up by 40%. What is the new price (in ₹)?
  10. 10.A water tank holds 1320 litres. 20% of the water is used. How many litres are left?
  11. 11.A price goes up by 25% 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 ₹2260 to ₹2938. By what percent did it go up?
  13. 13.A shop sells 3640 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  14. 14.The price of a school bag changes from ₹4420 to ₹6188. By what percent did it go up?
  15. 15.The price of a school bag changes from ₹3940 to ₹4334. By what percent did it go up?
  16. 16.The price of a school bag changes from ₹3300 to ₹3795. By what percent did it go up?
  17. 17.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
  18. 18.A water tank holds 4960 litres. 20% of the water is used. How many litres are left?
  19. 19.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
  20. 20.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  21. 21.The price of a school bag changes from ₹2480 to ₹3224. By what percent did it go up?
  22. 22.A water tank holds 3960 litres. 50% of the water is used. How many litres are left?
  23. 23.A shop sells 2480 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  24. 24.A shop sells 1980 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  25. 25.The price of a school bag changes from ₹240 to ₹216. By what percent did it come down?
  26. 26.A shop sells 4940 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  27. 27.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  28. 28.The price of a school bag changes from ₹2800 to ₹3080. By what percent did it go up?
  29. 29.A water tank holds 4940 litres. 10% of the water is used. How many litres are left?
  30. 30.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  31. 31.A water tank holds 940 litres. 5% of the water is used. How many litres are left?
  32. 32.A town has 3000 people. Its population grows by 20%. How many people live there now?
  33. 33.A water tank holds 1060 litres. 50% of the water is used. How many litres are left?
  34. 34.The price of a school bag changes from ₹1560 to ₹1638. By what percent did it go up?
  35. 35.A water tank holds 1440 litres. 20% of the water is used. How many litres are left?
  36. 36.A price goes up by 20% and then goes up by 20% more. By what percent has it gone up in all? =
  37. 37.The price of a school bag changes from ₹900 to ₹1035. By what percent did it go up?
  38. 38.A shop sells 3900 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  39. 39.A water tank holds 4720 litres. 40% of the water is used. How many litres are left?
  40. 40.A water tank holds 1960 litres. 50% of the water is used. How many litres are left?

Answer key

  1. 1625
  2. 20
  3. 40
  4. 1545
  5. 1350
  6. 5236
  7. 20
  8. 43
  9. 3304
  10. 1056
  11. 31.25
  12. 30
  13. 4186
  14. 40
  15. 10
  16. 15
  17. 33.5
  18. 3968
  19. 37
  20. 52.5
  21. 30
  22. 1980
  23. 2852
  24. 2574
  25. 10
  26. 7410
  27. 80
  28. 10
  29. 4446
  30. 28
  31. 893
  32. 3600
  33. 530
  34. 5
  35. 1152
  36. 44
  37. 15
  38. 5850
  39. 2832
  40. 980

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