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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 37 · 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 comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  2. 2.A town has 1460 people. Its population grows by 5%. How many people live there now?
  3. 3.The price of a school bag changes from ₹680 to ₹1020. By what percent did it go up?
  4. 4.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  5. 5.The price of a school bag changes from ₹1700 to ₹1530. By what percent did it come down?
  6. 6.A town has 920 people. Its population grows by 50%. How many people live there now?
  7. 7.The price of a school bag changes from ₹180 to ₹162. By what percent did it come down?
  8. 8.A water tank holds 1180 litres. 40% of the water is used. How many litres are left?
  9. 9.A water tank holds 4580 litres. 5% of the water is used. How many litres are left?
  10. 10.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =
  11. 11.A water tank holds 1960 litres. 25% of the water is used. How many litres are left?
  12. 12.A water tank holds 2940 litres. 5% of the water is used. How many litres are left?
  13. 13.A water tank holds 4120 litres. 40% of the water is used. How many litres are left?
  14. 14.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  15. 15.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  16. 16.A shop sells 4860 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  17. 17.A town has 2060 people. Its population grows by 40%. How many people live there now?
  18. 18.The price of a bicycle is ₹4200. It goes up by 5%. What is the new price (in ₹)?
  19. 19.The price of a bicycle is ₹3280. It goes up by 40%. What is the new price (in ₹)?
  20. 20.The price of a school bag changes from ₹3500 to ₹4375. By what percent did it go up?
  21. 21.A town has 3520 people. Its population grows by 40%. How many people live there now?
  22. 22.The price of a school bag changes from ₹100 to ₹95. By what percent did it come down?
  23. 23.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  24. 24.A water tank holds 3380 litres. 40% of the water is used. How many litres are left?
  25. 25.A shop sells 3060 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  26. 26.A water tank holds 1340 litres. 20% of the water is used. How many litres are left?
  27. 27.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  28. 28.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  29. 29.A town has 2400 people. Its population grows by 25%. How many people live there now?
  30. 30.The price of a bicycle is ₹4640. It goes up by 30%. What is the new price (in ₹)?
  31. 31.The price of a bicycle is ₹1900. It goes up by 40%. What is the new price (in ₹)?
  32. 32.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  33. 33.The price of a school bag changes from ₹2840 to ₹2414. By what percent did it come down?
  34. 34.The price of a bicycle is ₹3960. It goes up by 5%. What is the new price (in ₹)?
  35. 35.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
  36. 36.A water tank holds 860 litres. 40% of the water is used. How many litres are left?
  37. 37.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  38. 38.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  39. 39.A price comes down by 20% and then comes down by 25% more. By what percent has it come down in all? =
  40. 40.A shop sells 2360 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?

Answer key

  1. 14.5
  2. 1533
  3. 50
  4. 5
  5. 10
  6. 1380
  7. 10
  8. 708
  9. 4351
  10. 62.5
  11. 1470
  12. 2793
  13. 2472
  14. 20
  15. 54
  16. 6318
  17. 2884
  18. 4410
  19. 4592
  20. 25
  21. 4928
  22. 5
  23. 37
  24. 2028
  25. 3825
  26. 1072
  27. 43
  28. 62.5
  29. 3000
  30. 6032
  31. 2660
  32. 61
  33. 15
  34. 4158
  35. 33.5
  36. 516
  37. 28
  38. 20.75
  39. 40
  40. 3068

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