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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 627 · 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 40% and then comes down by 30% more. By what percent has it come down in all? =
  2. 2.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  3. 3.The price of a bicycle is ₹3500. It goes up by 50%. What is the new price (in ₹)?
  4. 4.The price of a school bag changes from ₹2200 to ₹2750. By what percent did it go up?
  5. 5.A water tank holds 1140 litres. 5% of the water is used. How many litres are left?
  6. 6.A town has 3800 people. Its population grows by 40%. How many people live there now?
  7. 7.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  8. 8.A town has 260 people. Its population grows by 15%. How many people live there now?
  9. 9.A water tank holds 180 litres. 5% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹3140 to ₹4710. By what percent did it go up?
  11. 11.A shop sells 4140 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  12. 12.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  13. 13.A town has 3820 people. Its population grows by 5%. How many people live there now?
  14. 14.A price comes down by 50% and then comes down by 15% more. By what percent has it come down in all? =
  15. 15.A water tank holds 2040 litres. 5% of the water is used. How many litres are left?
  16. 16.The price of a bicycle is ₹2360. It goes up by 5%. What is the new price (in ₹)?
  17. 17.A water tank holds 3780 litres. 20% of the water is used. How many litres are left?
  18. 18.A town has 4680 people. Its population grows by 40%. How many people live there now?
  19. 19.A town has 600 people. Its population grows by 5%. How many people live there now?
  20. 20.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  21. 21.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  22. 22.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  23. 23.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
  24. 24.A shop sells 1360 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  25. 25.A water tank holds 4240 litres. 25% of the water is used. How many litres are left?
  26. 26.The price of a school bag changes from ₹2260 to ₹3390. By what percent did it go up?
  27. 27.A shop sells 220 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  28. 28.A water tank holds 2760 litres. 20% of the water is used. How many litres are left?
  29. 29.A town has 240 people. Its population grows by 25%. How many people live there now?
  30. 30.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
  31. 31.The price of a school bag changes from ₹1840 to ₹1472. By what percent did it come down?
  32. 32.A shop sells 60 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  33. 33.A water tank holds 840 litres. 5% of the water is used. How many litres are left?
  34. 34.A water tank holds 1480 litres. 40% of the water is used. How many litres are left?
  35. 35.A town has 620 people. Its population grows by 15%. How many people live there now?
  36. 36.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  37. 37.A water tank holds 3100 litres. 30% of the water is used. How many litres are left?
  38. 38.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  39. 39.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  40. 40.A shop sells 4680 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?

Answer key

  1. 58
  2. 43.75
  3. 5250
  4. 25
  5. 1083
  6. 5320
  7. 19.25
  8. 299
  9. 171
  10. 50
  11. 6210
  12. 80
  13. 4011
  14. 57.5
  15. 1938
  16. 2478
  17. 3024
  18. 6552
  19. 630
  20. 9.75
  21. 49.5
  22. 52
  23. 54
  24. 1496
  25. 3180
  26. 50
  27. 264
  28. 2208
  29. 300
  30. 55
  31. 20
  32. 84
  33. 798
  34. 888
  35. 713
  36. 12.5
  37. 2170
  38. 43
  39. 95
  40. 5850

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