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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 359 · 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 5% more. By what percent has it come down in all? =
  2. 2.A town has 2040 people. Its population grows by 10%. How many people live there now?
  3. 3.A water tank holds 1040 litres. 20% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹1100 to ₹1210. By what percent did it go up?
  5. 5.The price of a school bag changes from ₹2700 to ₹3510. By what percent did it go up?
  6. 6.The price of a school bag changes from ₹2540 to ₹2032. By what percent did it come down?
  7. 7.A water tank holds 2660 litres. 15% of the water is used. How many litres are left?
  8. 8.A shop sells 2260 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  9. 9.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  10. 10.A water tank holds 2360 litres. 10% of the water is used. How many litres are left?
  11. 11.A water tank holds 680 litres. 50% of the water is used. How many litres are left?
  12. 12.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  13. 13.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
  14. 14.The price of a school bag changes from ₹480 to ₹456. By what percent did it come down?
  15. 15.A water tank holds 160 litres. 40% of the water is used. How many litres are left?
  16. 16.A water tank holds 320 litres. 20% of the water is used. How many litres are left?
  17. 17.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  18. 18.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  19. 19.A water tank holds 3720 litres. 5% of the water is used. How many litres are left?
  20. 20.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  21. 21.A water tank holds 4180 litres. 5% of the water is used. How many litres are left?
  22. 22.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  23. 23.The price of a school bag changes from ₹1820 to ₹2093. By what percent did it go up?
  24. 24.The price of a school bag changes from ₹200 to ₹150. By what percent did it come down?
  25. 25.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
  26. 26.A town has 1180 people. Its population grows by 15%. How many people live there now?
  27. 27.The price of a bicycle is ₹3600. It goes up by 10%. What is the new price (in ₹)?
  28. 28.A water tank holds 2820 litres. 10% of the water is used. How many litres are left?
  29. 29.The price of a school bag changes from ₹1160 to ₹928. By what percent did it come down?
  30. 30.The price of a school bag changes from ₹980 to ₹1029. By what percent did it go up?
  31. 31.A water tank holds 2320 litres. 25% of the water is used. How many litres are left?
  32. 32.A town has 2900 people. Its population grows by 5%. How many people live there now?
  33. 33.The price of a bicycle is ₹1020. It goes up by 40%. What is the new price (in ₹)?
  34. 34.A water tank holds 260 litres. 30% of the water is used. How many litres are left?
  35. 35.The price of a bicycle is ₹4580. It goes up by 10%. What is the new price (in ₹)?
  36. 36.A town has 2760 people. Its population grows by 50%. How many people live there now?
  37. 37.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  38. 38.A water tank holds 3800 litres. 10% of the water is used. How many litres are left?
  39. 39.A shop sells 940 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  40. 40.A water tank holds 2580 litres. 20% of the water is used. How many litres are left?

Answer key

  1. 43
  2. 2244
  3. 832
  4. 10
  5. 30
  6. 20
  7. 2261
  8. 2938
  9. 20.75
  10. 2124
  11. 340
  12. 37.5
  13. 24
  14. 5
  15. 96
  16. 256
  17. 14.5
  18. 32.25
  19. 3534
  20. 33
  21. 3971
  22. 15.5
  23. 15
  24. 25
  25. 32
  26. 1357
  27. 3960
  28. 2538
  29. 20
  30. 5
  31. 1740
  32. 3045
  33. 1428
  34. 182
  35. 5038
  36. 4140
  37. 43
  38. 3420
  39. 1034
  40. 2064

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