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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 603 · 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 water tank holds 400 litres. 15% of the water is used. How many litres are left?
  2. 2.A water tank holds 4280 litres. 5% of the water is used. How many litres are left?
  3. 3.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  4. 4.The price of a bicycle is ₹2720. It goes up by 5%. What is the new price (in ₹)?
  5. 5.A town has 3000 people. Its population grows by 10%. How many people live there now?
  6. 6.A water tank holds 840 litres. 5% of the water is used. How many litres are left?
  7. 7.A shop sells 3520 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  8. 8.The price of a bicycle is ₹3860. It goes up by 40%. What is the new price (in ₹)?
  9. 9.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  10. 10.The price of a bicycle is ₹460. It goes up by 40%. What is the new price (in ₹)?
  11. 11.A town has 4640 people. Its population grows by 15%. How many people live there now?
  12. 12.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  13. 13.A shop sells 2820 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  14. 14.A water tank holds 3280 litres. 50% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹2940 to ₹1470. By what percent did it come down?
  16. 16.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  17. 17.The price of a school bag changes from ₹4040 to ₹3636. By what percent did it come down?
  18. 18.The price of a bicycle is ₹1120. It goes up by 50%. What is the new price (in ₹)?
  19. 19.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  20. 20.The price of a school bag changes from ₹2120 to ₹2332. By what percent did it go up?
  21. 21.The price of a school bag changes from ₹260 to ₹338. By what percent did it go up?
  22. 22.A water tank holds 60 litres. 25% of the water is used. How many litres are left?
  23. 23.A water tank holds 2700 litres. 5% of the water is used. How many litres are left?
  24. 24.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  25. 25.The price of a school bag changes from ₹640 to ₹704. By what percent did it go up?
  26. 26.The price of a school bag changes from ₹1540 to ₹1309. By what percent did it come down?
  27. 27.A water tank holds 3900 litres. 50% of the water is used. How many litres are left?
  28. 28.A water tank holds 2640 litres. 10% of the water is used. How many litres are left?
  29. 29.A price goes up by 25% and then comes down by 15%. By what percent has it gone up in all? =
  30. 30.The price of a school bag changes from ₹1380 to ₹828. By what percent did it come down?
  31. 31.The price of a school bag changes from ₹480 to ₹552. By what percent did it go up?
  32. 32.A shop sells 4420 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  33. 33.The price of a school bag changes from ₹3340 to ₹3006. By what percent did it come down?
  34. 34.The price of a bicycle is ₹2400. It goes up by 5%. What is the new price (in ₹)?
  35. 35.The price of a bicycle is ₹1600. It goes up by 5%. What is the new price (in ₹)?
  36. 36.A price comes down by 20% and then comes down by 25% more. By what percent has it come down in all? =
  37. 37.A shop sells 1040 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  38. 38.A town has 2880 people. Its population grows by 5%. How many people live there now?
  39. 39.The price of a bicycle is ₹4120. It goes up by 15%. What is the new price (in ₹)?
  40. 40.A water tank holds 4440 litres. 15% of the water is used. How many litres are left?

Answer key

  1. 340
  2. 4066
  3. 31.25
  4. 2856
  5. 3300
  6. 798
  7. 4400
  8. 5404
  9. 57.5
  10. 644
  11. 5336
  12. 32.5
  13. 3102
  14. 1640
  15. 50
  16. 33.5
  17. 10
  18. 1680
  19. 31.25
  20. 10
  21. 30
  22. 45
  23. 2565
  24. 26
  25. 10
  26. 15
  27. 1950
  28. 2376
  29. 6.25
  30. 40
  31. 15
  32. 5083
  33. 10
  34. 2520
  35. 1680
  36. 40
  37. 1456
  38. 3024
  39. 4738
  40. 3774

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