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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 929 · 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 15% and then comes down by 5%. By what percent has it gone up in all? =
  2. 2.The price of a school bag changes from ₹540 to ₹702. By what percent did it go up?
  3. 3.The price of a school bag changes from ₹4500 to ₹4275. By what percent did it come down?
  4. 4.The price of a bicycle is ₹3580. It goes up by 50%. What is the new price (in ₹)?
  5. 5.The price of a school bag changes from ₹2760 to ₹1656. By what percent did it come down?
  6. 6.The price of a bicycle is ₹3240. It goes up by 15%. What is the new price (in ₹)?
  7. 7.A town has 540 people. Its population grows by 30%. How many people live there now?
  8. 8.A water tank holds 2220 litres. 5% of the water is used. How many litres are left?
  9. 9.A water tank holds 3080 litres. 10% of the water is used. How many litres are left?
  10. 10.A water tank holds 4220 litres. 50% of the water is used. How many litres are left?
  11. 11.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  12. 12.A water tank holds 640 litres. 10% of the water is used. How many litres are left?
  13. 13.A shop sells 2740 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  14. 14.A water tank holds 1660 litres. 40% of the water is used. How many litres are left?
  15. 15.A town has 3900 people. Its population grows by 5%. How many people live there now?
  16. 16.The price of a school bag changes from ₹2580 to ₹2838. By what percent did it go up?
  17. 17.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  18. 18.The price of a school bag changes from ₹4380 to ₹4599. By what percent did it go up?
  19. 19.The price of a school bag changes from ₹3700 to ₹4810. By what percent did it go up?
  20. 20.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  21. 21.The price of a bicycle is ₹4520. It goes up by 15%. What is the new price (in ₹)?
  22. 22.A price goes up by 40% 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 ₹420 to ₹588. By what percent did it go up?
  24. 24.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  25. 25.A town has 3360 people. Its population grows by 20%. How many people live there now?
  26. 26.The price of a school bag changes from ₹1200 to ₹1500. By what percent did it go up?
  27. 27.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  28. 28.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  29. 29.A price comes down by 15% and then comes down by 25% more. By what percent has it come down in all? =
  30. 30.A shop sells 1500 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  31. 31.The price of a school bag changes from ₹1320 to ₹1056. By what percent did it come down?
  32. 32.A price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
  33. 33.The price of a school bag changes from ₹4700 to ₹6110. By what percent did it go up?
  34. 34.A shop sells 2080 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  35. 35.A town has 3600 people. Its population grows by 40%. How many people live there now?
  36. 36.A water tank holds 260 litres. 25% of the water is used. How many litres are left?
  37. 37.A town has 3160 people. Its population grows by 30%. How many people live there now?
  38. 38.The price of a school bag changes from ₹2420 to ₹1815. By what percent did it come down?
  39. 39.The price of a school bag changes from ₹360 to ₹432. By what percent did it go up?
  40. 40.The price of a school bag changes from ₹4360 to ₹5014. By what percent did it go up?

Answer key

  1. 9.25
  2. 30
  3. 5
  4. 5370
  5. 40
  6. 3726
  7. 702
  8. 2109
  9. 2772
  10. 2110
  11. 52.5
  12. 576
  13. 2877
  14. 996
  15. 4095
  16. 10
  17. 70
  18. 5
  19. 30
  20. 28.75
  21. 5198
  22. 12
  23. 40
  24. 23.5
  25. 4032
  26. 25
  27. 21
  28. 14
  29. 36.25
  30. 1575
  31. 20
  32. 49.5
  33. 30
  34. 2600
  35. 5040
  36. 195
  37. 4108
  38. 25
  39. 20
  40. 15

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