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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 505 · 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 bicycle is ₹840. It goes up by 10%. What is the new price (in ₹)?
  2. 2.A price goes up by 20% and then comes down by 10%. By what percent has it gone up in all? =
  3. 3.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
  4. 4.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  5. 5.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
  6. 6.The price of a school bag changes from ₹1580 to ₹2054. By what percent did it go up?
  7. 7.The price of a school bag changes from ₹2340 to ₹3042. By what percent did it go up?
  8. 8.A price comes down by 20% and then comes down by 25% more. By what percent has it come down in all? =
  9. 9.A water tank holds 3200 litres. 30% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹320 to ₹304. By what percent did it come down?
  11. 11.A water tank holds 2020 litres. 5% of the water is used. How many litres are left?
  12. 12.The price of a bicycle is ₹2700. It goes up by 10%. What is the new price (in ₹)?
  13. 13.The price of a school bag changes from ₹60 to ₹63. By what percent did it go up?
  14. 14.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  15. 15.A water tank holds 1080 litres. 20% of the water is used. How many litres are left?
  16. 16.The price of a bicycle is ₹4560. It goes up by 40%. What is the new price (in ₹)?
  17. 17.The price of a school bag changes from ₹3280 to ₹4100. By what percent did it go up?
  18. 18.The price of a school bag changes from ₹4340 to ₹2604. By what percent did it come down?
  19. 19.A water tank holds 2800 litres. 10% of the water is used. How many litres are left?
  20. 20.A water tank holds 2880 litres. 25% of the water is used. How many litres are left?
  21. 21.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  22. 22.A shop sells 4600 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  23. 23.The price of a school bag changes from ₹2160 to ₹2052. By what percent did it come down?
  24. 24.A water tank holds 2140 litres. 30% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹2940 to ₹2205. By what percent did it come down?
  26. 26.The price of a school bag changes from ₹2980 to ₹2384. By what percent did it come down?
  27. 27.A town has 1820 people. Its population grows by 25%. How many people live there now?
  28. 28.The price of a school bag changes from ₹4260 to ₹5325. By what percent did it go up?
  29. 29.A shop sells 4080 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  30. 30.The price of a school bag changes from ₹300 to ₹345. By what percent did it go up?
  31. 31.A town has 620 people. Its population grows by 25%. How many people live there now?
  32. 32.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  33. 33.The price of a bicycle is ₹4700. It goes up by 15%. What is the new price (in ₹)?
  34. 34.A water tank holds 4680 litres. 15% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹2520 to ₹1764. By what percent did it come down?
  36. 36.The price of a bicycle is ₹280. It goes up by 25%. What is the new price (in ₹)?
  37. 37.A water tank holds 60 litres. 50% of the water is used. How many litres are left?
  38. 38.The price of a bicycle is ₹640. It goes up by 5%. What is the new price (in ₹)?
  39. 39.A town has 2120 people. Its population grows by 5%. How many people live there now?
  40. 40.The price of a bicycle is ₹780. It goes up by 15%. What is the new price (in ₹)?

Answer key

  1. 924
  2. 8
  3. 55
  4. 95
  5. 24
  6. 30
  7. 30
  8. 40
  9. 2240
  10. 5
  11. 1919
  12. 2970
  13. 5
  14. 61
  15. 864
  16. 6384
  17. 25
  18. 40
  19. 2520
  20. 2160
  21. 35
  22. 6900
  23. 5
  24. 1498
  25. 25
  26. 20
  27. 2275
  28. 25
  29. 4488
  30. 15
  31. 775
  32. 33
  33. 5405
  34. 3978
  35. 30
  36. 350
  37. 30
  38. 672
  39. 2226
  40. 897

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