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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 709 · 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.The price of a school bag changes from ₹200 to ₹170. By what percent did it come down?
  2. 2.The price of a school bag changes from ₹120 to ₹150. By what percent did it go up?
  3. 3.A shop sells 4680 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  4. 4.A price goes up by 20% and then goes up by 20% more. By what percent has it gone up in all? =
  5. 5.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  6. 6.A water tank holds 1580 litres. 20% of the water is used. How many litres are left?
  7. 7.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  8. 8.A town has 100 people. Its population grows by 20%. How many people live there now?
  9. 9.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  10. 10.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
  11. 11.The price of a school bag changes from ₹3760 to ₹1880. By what percent did it come down?
  12. 12.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
  13. 13.The price of a bicycle is ₹3280. It goes up by 25%. What is the new price (in ₹)?
  14. 14.A shop sells 1820 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  15. 15.A town has 4020 people. Its population grows by 5%. How many people live there now?
  16. 16.A water tank holds 1240 litres. 25% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹160 to ₹136. By what percent did it come down?
  18. 18.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
  19. 19.A water tank holds 3440 litres. 15% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹4040 to ₹2424. By what percent did it come down?
  21. 21.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  22. 22.A town has 4780 people. Its population grows by 50%. How many people live there now?
  23. 23.The price of a school bag changes from ₹3760 to ₹4888. By what percent did it go up?
  24. 24.A shop sells 1380 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  25. 25.The price of a school bag changes from ₹2920 to ₹2044. By what percent did it come down?
  26. 26.The price of a bicycle is ₹3620. It goes up by 30%. What is the new price (in ₹)?
  27. 27.The price of a school bag changes from ₹2600 to ₹1300. By what percent did it come down?
  28. 28.The price of a bicycle is ₹4140. It goes up by 10%. What is the new price (in ₹)?
  29. 29.The price of a bicycle is ₹3640. It goes up by 15%. What is the new price (in ₹)?
  30. 30.A water tank holds 1680 litres. 30% of the water is used. How many litres are left?
  31. 31.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  32. 32.The price of a school bag changes from ₹1640 to ₹1148. By what percent did it come down?
  33. 33.A water tank holds 4360 litres. 5% of the water is used. How many litres are left?
  34. 34.A town has 560 people. Its population grows by 15%. How many people live there now?
  35. 35.The price of a school bag changes from ₹3500 to ₹5250. By what percent did it go up?
  36. 36.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  37. 37.A shop sells 2920 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  38. 38.A water tank holds 2440 litres. 10% of the water is used. How many litres are left?
  39. 39.The price of a school bag changes from ₹140 to ₹70. By what percent did it come down?
  40. 40.A shop sells 3120 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?

Answer key

  1. 15
  2. 25
  3. 6552
  4. 44
  5. 65
  6. 1264
  7. 19.25
  8. 120
  9. 14.5
  10. 32
  11. 50
  12. 68
  13. 4100
  14. 2093
  15. 4221
  16. 930
  17. 15
  18. 37
  19. 2924
  20. 40
  21. 37.5
  22. 7170
  23. 30
  24. 1656
  25. 30
  26. 4706
  27. 50
  28. 4554
  29. 4186
  30. 1176
  31. 15.5
  32. 30
  33. 4142
  34. 644
  35. 50
  36. 32.5
  37. 3650
  38. 2196
  39. 50
  40. 4368

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