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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 659 · 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 price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  2. 2.The price of a school bag changes from ₹3600 to ₹4500. By what percent did it go up?
  3. 3.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  4. 4.The price of a school bag changes from ₹3920 to ₹5880. By what percent did it go up?
  5. 5.The price of a school bag changes from ₹280 to ₹336. By what percent did it go up?
  6. 6.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  7. 7.A water tank holds 3420 litres. 40% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹4120 to ₹4738. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹3100 to ₹2790. By what percent did it come down?
  10. 10.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  11. 11.A water tank holds 3880 litres. 20% of the water is used. How many litres are left?
  12. 12.The price of a school bag changes from ₹2800 to ₹2100. By what percent did it come down?
  13. 13.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  14. 14.A shop sells 5000 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  15. 15.A water tank holds 2160 litres. 30% of the water is used. How many litres are left?
  16. 16.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  17. 17.The price of a school bag changes from ₹500 to ₹350. By what percent did it come down?
  18. 18.A water tank holds 2000 litres. 40% of the water is used. How many litres are left?
  19. 19.A water tank holds 4200 litres. 40% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹1120 to ₹1456. By what percent did it go up?
  21. 21.The price of a school bag changes from ₹2280 to ₹2964. By what percent did it go up?
  22. 22.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  23. 23.The price of a school bag changes from ₹2960 to ₹3256. By what percent did it go up?
  24. 24.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  25. 25.The price of a bicycle is ₹2720. It goes up by 50%. What is the new price (in ₹)?
  26. 26.A price comes down by 15% and then comes down by 25% more. By what percent has it come down in all? =
  27. 27.A price goes up by 20% and then goes up by 25% more. By what percent has it gone up in all? =
  28. 28.A water tank holds 300 litres. 40% of the water is used. How many litres are left?
  29. 29.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
  30. 30.The price of a bicycle is ₹4540. It goes up by 25%. What is the new price (in ₹)?
  31. 31.The price of a bicycle is ₹2280. It goes up by 15%. What is the new price (in ₹)?
  32. 32.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  33. 33.The price of a bicycle is ₹1140. It goes up by 5%. What is the new price (in ₹)?
  34. 34.The price of a school bag changes from ₹2620 to ₹3013. By what percent did it go up?
  35. 35.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  36. 36.The price of a bicycle is ₹940. It goes up by 25%. What is the new price (in ₹)?
  37. 37.A town has 1380 people. Its population grows by 40%. How many people live there now?
  38. 38.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  39. 39.A water tank holds 4320 litres. 40% of the water is used. How many litres are left?
  40. 40.A water tank holds 620 litres. 40% of the water is used. How many litres are left?

Answer key

  1. 87.5
  2. 25
  3. 37.5
  4. 50
  5. 20
  6. 49.5
  7. 2052
  8. 15
  9. 10
  10. 15.5
  11. 3104
  12. 25
  13. 32.5
  14. 7500
  15. 1512
  16. 4.5
  17. 30
  18. 1200
  19. 2520
  20. 30
  21. 30
  22. 4
  23. 10
  24. 23.5
  25. 4080
  26. 36.25
  27. 50
  28. 180
  29. 110
  30. 5675
  31. 2622
  32. 14
  33. 1197
  34. 15
  35. 5
  36. 1175
  37. 1932
  38. 40.5
  39. 2592
  40. 372

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