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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 655 · 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 ₹3280. It goes up by 15%. What is the new price (in ₹)?
  2. 2.A water tank holds 2840 litres. 25% of the water is used. How many litres are left?
  3. 3.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  4. 4.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  5. 5.The price of a school bag changes from ₹480 to ₹624. By what percent did it go up?
  6. 6.The price of a school bag changes from ₹3300 to ₹3795. By what percent did it go up?
  7. 7.A price goes up by 20% 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 ₹3520 to ₹3696. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹3340 to ₹2672. By what percent did it come down?
  10. 10.A town has 1860 people. Its population grows by 20%. How many people live there now?
  11. 11.The price of a bicycle is ₹300. It goes up by 25%. What is the new price (in ₹)?
  12. 12.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  13. 13.A water tank holds 2680 litres. 10% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹4140 to ₹3519. By what percent did it come down?
  15. 15.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  16. 16.The price of a bicycle is ₹4920. It goes up by 15%. What is the new price (in ₹)?
  17. 17.A shop sells 4780 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  18. 18.A shop sells 1120 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  19. 19.A town has 2560 people. Its population grows by 15%. How many people live there now?
  20. 20.The price of a school bag changes from ₹4000 to ₹3600. By what percent did it come down?
  21. 21.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  22. 22.A water tank holds 2680 litres. 50% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹3360 to ₹3192. By what percent did it come down?
  24. 24.A water tank holds 760 litres. 25% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹1460 to ₹1241. By what percent did it come down?
  26. 26.A town has 3000 people. Its population grows by 25%. How many people live there now?
  27. 27.The price of a school bag changes from ₹4040 to ₹5656. By what percent did it go up?
  28. 28.The price of a school bag changes from ₹4400 to ₹6600. By what percent did it go up?
  29. 29.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  30. 30.The price of a bicycle is ₹1300. It goes up by 25%. What is the new price (in ₹)?
  31. 31.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  32. 32.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  33. 33.The price of a school bag changes from ₹4480 to ₹3136. By what percent did it come down?
  34. 34.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  35. 35.A water tank holds 3660 litres. 30% of the water is used. How many litres are left?
  36. 36.A shop sells 2060 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  37. 37.The price of a school bag changes from ₹200 to ₹240. By what percent did it go up?
  38. 38.The price of a bicycle is ₹3640. It goes up by 50%. What is the new price (in ₹)?
  39. 39.The price of a school bag changes from ₹4420 to ₹5746. By what percent did it go up?
  40. 40.A water tank holds 3620 litres. 50% of the water is used. How many litres are left?

Answer key

  1. 3772
  2. 2130
  3. 37
  4. 19.25
  5. 30
  6. 15
  7. 38
  8. 5
  9. 20
  10. 2232
  11. 375
  12. 52
  13. 2412
  14. 15
  15. 58
  16. 5658
  17. 5975
  18. 1568
  19. 2944
  20. 10
  21. 57.5
  22. 1340
  23. 5
  24. 570
  25. 15
  26. 3750
  27. 40
  28. 50
  29. 20
  30. 1625
  31. 43
  32. 46
  33. 30
  34. 4.5
  35. 2562
  36. 2884
  37. 20
  38. 5460
  39. 30
  40. 1810

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