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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 419 · 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.

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  1. 1.The price of a school bag changes from ₹2220 to ₹2442. By what percent did it go up?
  2. 2.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  3. 3.The price of a school bag changes from ₹3420 to ₹2565. By what percent did it come down?
  4. 4.The price of a school bag changes from ₹4940 to ₹6422. By what percent did it go up?
  5. 5.The price of a school bag changes from ₹3680 to ₹5152. By what percent did it go up?
  6. 6.The price of a school bag changes from ₹4580 to ₹3893. By what percent did it come down?
  7. 7.A water tank holds 1360 litres. 10% of the water is used. How many litres are left?
  8. 8.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  9. 9.A water tank holds 1160 litres. 25% of the water is used. How many litres are left?
  10. 10.The price of a bicycle is ₹160. It goes up by 15%. What is the new price (in ₹)?
  11. 11.A water tank holds 1480 litres. 25% of the water is used. How many litres are left?
  12. 12.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
  13. 13.A water tank holds 3860 litres. 15% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹2140 to ₹1284. By what percent did it come down?
  15. 15.The price of a school bag changes from ₹3980 to ₹3582. By what percent did it come down?
  16. 16.The price of a bicycle is ₹1600. It goes up by 50%. What is the new price (in ₹)?
  17. 17.A water tank holds 1540 litres. 5% of the water is used. How many litres are left?
  18. 18.A water tank holds 3360 litres. 15% of the water is used. How many litres are left?
  19. 19.A town has 3820 people. Its population grows by 30%. How many people live there now?
  20. 20.A water tank holds 3700 litres. 20% of the water is used. How many litres are left?
  21. 21.A water tank holds 780 litres. 50% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹460 to ₹437. By what percent did it come down?
  23. 23.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
  24. 24.The price of a school bag changes from ₹4220 to ₹2532. By what percent did it come down?
  25. 25.A price goes up by 50% and then comes down by 30%. By what percent has it gone up in all? =
  26. 26.The price of a bicycle is ₹1080. It goes up by 10%. What is the new price (in ₹)?
  27. 27.The price of a school bag changes from ₹1620 to ₹1377. By what percent did it come down?
  28. 28.A water tank holds 2560 litres. 15% of the water is used. How many litres are left?
  29. 29.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  30. 30.The price of a bicycle is ₹3440. It goes up by 10%. What is the new price (in ₹)?
  31. 31.A town has 400 people. Its population grows by 10%. How many people live there now?
  32. 32.The price of a school bag changes from ₹1800 to ₹1620. By what percent did it come down?
  33. 33.The price of a school bag changes from ₹2660 to ₹3192. By what percent did it go up?
  34. 34.The price of a bicycle is ₹1900. It goes up by 10%. What is the new price (in ₹)?
  35. 35.The price of a school bag changes from ₹940 to ₹893. By what percent did it come down?
  36. 36.The price of a school bag changes from ₹540 to ₹270. By what percent did it come down?
  37. 37.A shop sells 3760 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  38. 38.A shop sells 3320 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  39. 39.A water tank holds 420 litres. 15% of the water is used. How many litres are left?
  40. 40.A water tank holds 2400 litres. 10% of the water is used. How many litres are left?

Answer key

  1. 10
  2. 14.5
  3. 25
  4. 30
  5. 40
  6. 15
  7. 1224
  8. 17
  9. 870
  10. 184
  11. 1110
  12. 28.75
  13. 3281
  14. 40
  15. 10
  16. 2400
  17. 1463
  18. 2856
  19. 4966
  20. 2960
  21. 390
  22. 5
  23. 40.5
  24. 40
  25. 5
  26. 1188
  27. 15
  28. 2176
  29. 37.5
  30. 3784
  31. 440
  32. 10
  33. 20
  34. 2090
  35. 5
  36. 50
  37. 4512
  38. 4316
  39. 357
  40. 2160

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