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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 292 · 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 30% and then comes down by 15% more. By what percent has it come down in all? =
  2. 2.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  3. 3.A water tank holds 4780 litres. 25% of the water is used. How many litres are left?
  4. 4.A shop sells 680 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  5. 5.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  6. 6.The price of a bicycle is ₹3420. It goes up by 50%. What is the new price (in ₹)?
  7. 7.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  8. 8.The price of a school bag changes from ₹1940 to ₹2037. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹4460 to ₹4683. By what percent did it go up?
  10. 10.The price of a bicycle is ₹3760. It goes up by 5%. What is the new price (in ₹)?
  11. 11.A water tank holds 3280 litres. 50% of the water is used. How many litres are left?
  12. 12.The price of a school bag changes from ₹2640 to ₹3168. By what percent did it go up?
  13. 13.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  14. 14.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  15. 15.A water tank holds 1360 litres. 20% of the water is used. How many litres are left?
  16. 16.A town has 1800 people. Its population grows by 25%. How many people live there now?
  17. 17.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  18. 18.A shop sells 4700 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  19. 19.The price of a bicycle is ₹3580. It goes up by 10%. What is the new price (in ₹)?
  20. 20.A water tank holds 420 litres. 25% of the water is used. How many litres are left?
  21. 21.The price of a school bag changes from ₹3140 to ₹1884. By what percent did it come down?
  22. 22.The price of a bicycle is ₹3480. It goes up by 15%. What is the new price (in ₹)?
  23. 23.A water tank holds 1780 litres. 40% of the water is used. How many litres are left?
  24. 24.A water tank holds 3240 litres. 30% of the water is used. How many litres are left?
  25. 25.The price of a bicycle is ₹3960. It goes up by 50%. What is the new price (in ₹)?
  26. 26.A shop sells 3260 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  27. 27.The price of a school bag changes from ₹1900 to ₹950. By what percent did it come down?
  28. 28.A town has 940 people. Its population grows by 5%. How many people live there now?
  29. 29.The price of a school bag changes from ₹2300 to ₹1610. By what percent did it come down?
  30. 30.The price of a bicycle is ₹4760. It goes up by 40%. What is the new price (in ₹)?
  31. 31.The price of a school bag changes from ₹4280 to ₹5564. By what percent did it go up?
  32. 32.A water tank holds 2080 litres. 10% of the water is used. How many litres are left?
  33. 33.A water tank holds 700 litres. 20% of the water is used. How many litres are left?
  34. 34.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
  35. 35.A town has 2200 people. Its population grows by 10%. How many people live there now?
  36. 36.The price of a school bag changes from ₹4340 to ₹5425. By what percent did it go up?
  37. 37.The price of a school bag changes from ₹980 to ₹1372. By what percent did it go up?
  38. 38.The price of a school bag changes from ₹1980 to ₹1881. By what percent did it come down?
  39. 39.A shop sells 4000 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  40. 40.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =

Answer key

  1. 40.5
  2. 17
  3. 3585
  4. 850
  5. 32.25
  6. 5130
  7. 20.75
  8. 5
  9. 5
  10. 3948
  11. 1640
  12. 20
  13. 37.5
  14. 38
  15. 1088
  16. 2250
  17. 4
  18. 4935
  19. 3938
  20. 315
  21. 40
  22. 4002
  23. 1068
  24. 2268
  25. 5940
  26. 3423
  27. 50
  28. 987
  29. 30
  30. 6664
  31. 30
  32. 1872
  33. 560
  34. 125
  35. 2420
  36. 25
  37. 40
  38. 5
  39. 4600
  40. 32.5

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