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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 31 · 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 ₹4000 to ₹5000. By what percent did it go up?
  2. 2.A water tank holds 1740 litres. 50% of the water is used. How many litres are left?
  3. 3.The price of a school bag changes from ₹3800 to ₹4180. By what percent did it go up?
  4. 4.The price of a bicycle is ₹1400. It goes up by 30%. What is the new price (in ₹)?
  5. 5.The price of a school bag changes from ₹3500 to ₹2975. By what percent did it come down?
  6. 6.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
  7. 7.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  8. 8.A water tank holds 3560 litres. 20% of the water is used. How many litres are left?
  9. 9.A water tank holds 1800 litres. 25% of the water is used. How many litres are left?
  10. 10.The price of a bicycle is ₹3520. It goes up by 5%. What is the new price (in ₹)?
  11. 11.A water tank holds 2600 litres. 5% of the water is used. How many litres are left?
  12. 12.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
  13. 13.A price comes down by 30% and then comes down by 30% more. By what percent has it come down in all? =
  14. 14.A water tank holds 4080 litres. 20% of the water is used. How many litres are left?
  15. 15.A shop sells 500 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  16. 16.A town has 3020 people. Its population grows by 10%. How many people live there now?
  17. 17.A shop sells 3720 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  18. 18.A water tank holds 3900 litres. 40% of the water is used. How many litres are left?
  19. 19.A price goes up by 40% and then goes up by 25% more. By what percent has it gone up in all? =
  20. 20.A water tank holds 4900 litres. 5% of the water is used. How many litres are left?
  21. 21.A water tank holds 2240 litres. 30% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹620 to ₹682. By what percent did it go up?
  23. 23.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  24. 24.The price of a bicycle is ₹1480. It goes up by 50%. What is the new price (in ₹)?
  25. 25.The price of a school bag changes from ₹4840 to ₹4114. By what percent did it come down?
  26. 26.The price of a school bag changes from ₹2160 to ₹3240. By what percent did it go up?
  27. 27.A water tank holds 2560 litres. 20% of the water is used. How many litres are left?
  28. 28.The price of a school bag changes from ₹4600 to ₹5520. By what percent did it go up?
  29. 29.The price of a school bag changes from ₹2280 to ₹2052. By what percent did it come down?
  30. 30.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  31. 31.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
  32. 32.A town has 2460 people. Its population grows by 5%. How many people live there now?
  33. 33.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹4660 to ₹4427. By what percent did it come down?
  35. 35.The price of a bicycle is ₹1660. It goes up by 15%. What is the new price (in ₹)?
  36. 36.A water tank holds 3760 litres. 25% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹3000 to ₹2850. By what percent did it come down?
  38. 38.The price of a school bag changes from ₹3440 to ₹3096. By what percent did it come down?
  39. 39.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  40. 40.The price of a school bag changes from ₹1640 to ₹1148. By what percent did it come down?

Answer key

  1. 25
  2. 870
  3. 10
  4. 1820
  5. 15
  6. 44
  7. 19.25
  8. 2848
  9. 1350
  10. 3696
  11. 2470
  12. 62.5
  13. 51
  14. 3264
  15. 750
  16. 3322
  17. 4092
  18. 2340
  19. 75
  20. 4655
  21. 1568
  22. 10
  23. 2
  24. 2220
  25. 15
  26. 50
  27. 2048
  28. 20
  29. 10
  30. 36.5
  31. 75
  32. 2583
  33. 57.5
  34. 5
  35. 1909
  36. 2820
  37. 5
  38. 10
  39. 33.5
  40. 30

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