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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 435 · 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 3420 litres. 25% of the water is used. How many litres are left?
  2. 2.The price of a school bag changes from ₹2400 to ₹2280. By what percent did it come down?
  3. 3.The price of a school bag changes from ₹4880 to ₹5856. By what percent did it go up?
  4. 4.The price of a school bag changes from ₹4120 to ₹4326. By what percent did it go up?
  5. 5.A shop sells 2140 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  6. 6.A water tank holds 2080 litres. 25% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹1020 to ₹612. By what percent did it come down?
  8. 8.The price of a school bag changes from ₹260 to ₹364. By what percent did it go up?
  9. 9.A water tank holds 4760 litres. 25% of the water is used. How many litres are left?
  10. 10.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
  11. 11.A shop sells 3580 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  12. 12.The price of a school bag changes from ₹500 to ₹375. By what percent did it come down?
  13. 13.A water tank holds 4260 litres. 30% of the water is used. How many litres are left?
  14. 14.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  15. 15.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  16. 16.A water tank holds 1980 litres. 10% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹640 to ₹736. By what percent did it go up?
  18. 18.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  19. 19.The price of a school bag changes from ₹2380 to ₹2023. By what percent did it come down?
  20. 20.A shop sells 460 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  21. 21.The price of a school bag changes from ₹300 to ₹375. By what percent did it go up?
  22. 22.A town has 4760 people. Its population grows by 50%. How many people live there now?
  23. 23.The price of a school bag changes from ₹4900 to ₹7350. By what percent did it go up?
  24. 24.A shop sells 3520 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  25. 25.The price of a school bag changes from ₹1260 to ₹945. By what percent did it come down?
  26. 26.The price of a school bag changes from ₹4380 to ₹6132. By what percent did it go up?
  27. 27.The price of a bicycle is ₹140. It goes up by 30%. What is the new price (in ₹)?
  28. 28.The price of a school bag changes from ₹4960 to ₹2480. By what percent did it come down?
  29. 29.A water tank holds 760 litres. 15% of the water is used. How many litres are left?
  30. 30.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  31. 31.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  32. 32.A water tank holds 920 litres. 15% of the water is used. How many litres are left?
  33. 33.A water tank holds 2800 litres. 25% of the water is used. How many litres are left?
  34. 34.A water tank holds 3500 litres. 40% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹140 to ₹168. By what percent did it go up?
  36. 36.The price of a school bag changes from ₹240 to ₹192. By what percent did it come down?
  37. 37.A water tank holds 3760 litres. 40% of the water is used. How many litres are left?
  38. 38.The price of a bicycle is ₹3620. It goes up by 5%. What is the new price (in ₹)?
  39. 39.The price of a bicycle is ₹240. It goes up by 15%. What is the new price (in ₹)?
  40. 40.The price of a bicycle is ₹900. It goes up by 30%. What is the new price (in ₹)?

Answer key

  1. 2565
  2. 5
  3. 20
  4. 5
  5. 2675
  6. 1560
  7. 40
  8. 40
  9. 3570
  10. 75
  11. 5370
  12. 25
  13. 2982
  14. 46
  15. 17
  16. 1782
  17. 15
  18. 14
  19. 15
  20. 598
  21. 25
  22. 7140
  23. 50
  24. 3872
  25. 25
  26. 40
  27. 182
  28. 50
  29. 646
  30. 31.25
  31. 32
  32. 782
  33. 2100
  34. 2100
  35. 20
  36. 20
  37. 2256
  38. 3801
  39. 276
  40. 1170

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