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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 161 · 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 ₹4460. It goes up by 15%. What is the new price (in ₹)?
  2. 2.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  3. 3.A town has 3580 people. Its population grows by 25%. How many people live there now?
  4. 4.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  5. 5.A shop sells 640 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  6. 6.The price of a school bag changes from ₹380 to ₹285. By what percent did it come down?
  7. 7.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
  8. 8.A water tank holds 220 litres. 15% of the water is used. How many litres are left?
  9. 9.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  10. 10.A water tank holds 340 litres. 5% of the water is used. How many litres are left?
  11. 11.A shop sells 1820 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  12. 12.The price of a school bag changes from ₹4580 to ₹6412. By what percent did it go up?
  13. 13.The price of a school bag changes from ₹2880 to ₹4320. By what percent did it go up?
  14. 14.A town has 1080 people. Its population grows by 20%. How many people live there now?
  15. 15.The price of a school bag changes from ₹3360 to ₹4704. By what percent did it go up?
  16. 16.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  17. 17.A water tank holds 2080 litres. 30% of the water is used. How many litres are left?
  18. 18.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  19. 19.The price of a bicycle is ₹3000. It goes up by 50%. What is the new price (in ₹)?
  20. 20.A town has 1800 people. Its population grows by 20%. How many people live there now?
  21. 21.A water tank holds 4700 litres. 50% of the water is used. How many litres are left?
  22. 22.A water tank holds 1040 litres. 10% of the water is used. How many litres are left?
  23. 23.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  24. 24.The price of a bicycle is ₹4540. It goes up by 25%. What is the new price (in ₹)?
  25. 25.The price of a bicycle is ₹1480. It goes up by 20%. What is the new price (in ₹)?
  26. 26.The price of a school bag changes from ₹2060 to ₹2678. By what percent did it go up?
  27. 27.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  28. 28.The price of a school bag changes from ₹3480 to ₹4872. By what percent did it go up?
  29. 29.A town has 2520 people. Its population grows by 10%. How many people live there now?
  30. 30.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  31. 31.The price of a school bag changes from ₹3960 to ₹4158. By what percent did it go up?
  32. 32.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  33. 33.A shop sells 1080 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  34. 34.A water tank holds 4800 litres. 50% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹200 to ₹260. By what percent did it go up?
  36. 36.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  37. 37.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  38. 38.A town has 260 people. Its population grows by 5%. How many people live there now?
  39. 39.A water tank holds 2080 litres. 20% of the water is used. How many litres are left?
  40. 40.A water tank holds 2000 litres. 20% of the water is used. How many litres are left?

Answer key

  1. 5129
  2. 12.5
  3. 4475
  4. 46
  5. 800
  6. 25
  7. 37
  8. 187
  9. 62.5
  10. 323
  11. 2093
  12. 40
  13. 50
  14. 1296
  15. 40
  16. 23.5
  17. 1456
  18. 27.75
  19. 4500
  20. 2160
  21. 2350
  22. 936
  23. 15.5
  24. 5675
  25. 1776
  26. 30
  27. 26
  28. 40
  29. 2772
  30. 3.5
  31. 5
  32. 52.5
  33. 1512
  34. 2400
  35. 30
  36. 32.25
  37. 32
  38. 273
  39. 1664
  40. 1600

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