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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 354 · 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.The price of a school bag changes from ₹2720 to ₹1904. By what percent did it come down?
  2. 2.The price of a school bag changes from ₹560 to ₹336. By what percent did it come down?
  3. 3.The price of a school bag changes from ₹1560 to ₹1404. By what percent did it come down?
  4. 4.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  5. 5.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  6. 6.A shop sells 4160 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  7. 7.A water tank holds 3960 litres. 25% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹160 to ₹192. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹120 to ₹102. By what percent did it come down?
  10. 10.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =
  11. 11.The price of a school bag changes from ₹3020 to ₹3171. By what percent did it go up?
  12. 12.A water tank holds 4400 litres. 40% of the water is used. How many litres are left?
  13. 13.The price of a school bag changes from ₹760 to ₹684. By what percent did it come down?
  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 town has 1220 people. Its population grows by 30%. How many people live there now?
  16. 16.A water tank holds 4820 litres. 10% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹3080 to ₹4004. By what percent did it go up?
  18. 18.A water tank holds 2320 litres. 25% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹1940 to ₹2231. By what percent did it go up?
  20. 20.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  21. 21.A town has 1260 people. Its population grows by 10%. How many people live there now?
  22. 22.A water tank holds 1180 litres. 25% of the water is used. How many litres are left?
  23. 23.A water tank holds 2700 litres. 15% of the water is used. How many litres are left?
  24. 24.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
  25. 25.The price of a bicycle is ₹920. It goes up by 40%. What is the new price (in ₹)?
  26. 26.The price of a bicycle is ₹3080. It goes up by 5%. What is the new price (in ₹)?
  27. 27.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
  28. 28.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  29. 29.The price of a school bag changes from ₹760 to ₹836. By what percent did it go up?
  30. 30.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  31. 31.A price goes up by 30% and then comes down by 15%. By what percent has it gone up in all? =
  32. 32.A town has 3620 people. Its population grows by 30%. How many people live there now?
  33. 33.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  34. 34.A shop sells 3840 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  35. 35.A shop sells 80 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  36. 36.A water tank holds 1200 litres. 40% of the water is used. How many litres are left?
  37. 37.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  38. 38.The price of a school bag changes from ₹3180 to ₹4452. By what percent did it go up?
  39. 39.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
  40. 40.A water tank holds 1220 litres. 15% of the water is used. How many litres are left?

Answer key

  1. 30
  2. 40
  3. 10
  4. 5
  5. 75
  6. 4368
  7. 2970
  8. 20
  9. 15
  10. 55
  11. 5
  12. 2640
  13. 10
  14. 57.5
  15. 1586
  16. 4338
  17. 30
  18. 1740
  19. 15
  20. 57.5
  21. 1386
  22. 885
  23. 2295
  24. 62.5
  25. 1288
  26. 3234
  27. 62.5
  28. 14
  29. 10
  30. 32.25
  31. 10.5
  32. 4706
  33. 32.5
  34. 4416
  35. 88
  36. 720
  37. 20.75
  38. 40
  39. 19
  40. 1037

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