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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 21 · 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 40% and then comes down by 10% more. By what percent has it come down in all? =
  2. 2.A shop sells 3740 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  3. 3.A price goes up by 25% and then comes down by 15%. By what percent has it gone up in all? =
  4. 4.A water tank holds 2500 litres. 10% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹2340 to ₹1638. By what percent did it come down?
  6. 6.A water tank holds 720 litres. 20% of the water is used. How many litres are left?
  7. 7.A shop sells 3820 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  8. 8.A water tank holds 1160 litres. 15% of the water is used. How many litres are left?
  9. 9.A water tank holds 340 litres. 25% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹1000 to ₹1200. By what percent did it go up?
  11. 11.The price of a bicycle is ₹580. It goes up by 15%. What is the new price (in ₹)?
  12. 12.The price of a bicycle is ₹4080. It goes up by 15%. What is the new price (in ₹)?
  13. 13.The price of a school bag changes from ₹1660 to ₹1245. By what percent did it come down?
  14. 14.A water tank holds 2840 litres. 30% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹3940 to ₹2758. By what percent did it come down?
  16. 16.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
  17. 17.A town has 4860 people. Its population grows by 5%. How many people live there now?
  18. 18.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  19. 19.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  20. 20.A water tank holds 900 litres. 25% of the water is used. How many litres are left?
  21. 21.A shop sells 360 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  22. 22.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  23. 23.A water tank holds 1360 litres. 20% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹3160 to ₹4424. By what percent did it go up?
  25. 25.A shop sells 3980 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  26. 26.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
  27. 27.The price of a bicycle is ₹2840. It goes up by 40%. What is the new price (in ₹)?
  28. 28.A water tank holds 2600 litres. 30% of the water is used. How many litres are left?
  29. 29.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  30. 30.A town has 2560 people. Its population grows by 30%. How many people live there now?
  31. 31.The price of a bicycle is ₹3940. It goes up by 50%. What is the new price (in ₹)?
  32. 32.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  33. 33.The price of a school bag changes from ₹660 to ₹924. By what percent did it go up?
  34. 34.A price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
  35. 35.The price of a school bag changes from ₹4520 to ₹4746. By what percent did it go up?
  36. 36.The price of a bicycle is ₹760. It goes up by 15%. What is the new price (in ₹)?
  37. 37.A town has 3600 people. Its population grows by 25%. How many people live there now?
  38. 38.The price of a bicycle is ₹1860. It goes up by 30%. What is the new price (in ₹)?
  39. 39.A town has 4340 people. Its population grows by 25%. How many people live there now?
  40. 40.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =

Answer key

  1. 46
  2. 5236
  3. 6.25
  4. 2250
  5. 30
  6. 576
  7. 5730
  8. 986
  9. 255
  10. 20
  11. 667
  12. 4692
  13. 25
  14. 1988
  15. 30
  16. 65
  17. 5103
  18. 75
  19. 14
  20. 675
  21. 468
  22. 52
  23. 1088
  24. 40
  25. 4378
  26. 28.75
  27. 3976
  28. 1820
  29. 32.5
  30. 3328
  31. 5910
  32. 3.5
  33. 40
  34. 49.5
  35. 5
  36. 874
  37. 4500
  38. 2418
  39. 5425
  40. 82

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