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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 636 · 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 30% and then goes up by 10% more. By what percent has it gone up in all? =
  2. 2.A shop sells 1200 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  3. 3.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =
  4. 4.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
  5. 5.The price of a bicycle is ₹960. It goes up by 10%. What is the new price (in ₹)?
  6. 6.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  7. 7.The price of a school bag changes from ₹3020 to ₹4530. By what percent did it go up?
  8. 8.The price of a bicycle is ₹900. It goes up by 10%. What is the new price (in ₹)?
  9. 9.A water tank holds 180 litres. 5% of the water is used. How many litres are left?
  10. 10.A water tank holds 1880 litres. 20% of the water is used. How many litres are left?
  11. 11.A water tank holds 2000 litres. 10% of the water is used. How many litres are left?
  12. 12.The price of a bicycle is ₹4020. It goes up by 15%. What is the new price (in ₹)?
  13. 13.The price of a bicycle is ₹2000. It goes up by 25%. What is the new price (in ₹)?
  14. 14.The price of a school bag changes from ₹60 to ₹54. By what percent did it come down?
  15. 15.A water tank holds 2120 litres. 20% of the water is used. How many litres are left?
  16. 16.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  17. 17.A town has 220 people. Its population grows by 10%. How many people live there now?
  18. 18.A water tank holds 2740 litres. 25% of the water is used. How many litres are left?
  19. 19.A water tank holds 4740 litres. 25% of the water is used. How many litres are left?
  20. 20.A town has 1440 people. Its population grows by 5%. How many people live there now?
  21. 21.A water tank holds 500 litres. 20% of the water is used. How many litres are left?
  22. 22.A water tank holds 3940 litres. 20% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹1640 to ₹1968. By what percent did it go up?
  24. 24.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  25. 25.A water tank holds 4800 litres. 25% of the water is used. How many litres are left?
  26. 26.The price of a school bag changes from ₹4540 to ₹4994. By what percent did it go up?
  27. 27.A shop sells 120 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  28. 28.The price of a school bag changes from ₹4660 to ₹5126. By what percent did it go up?
  29. 29.A water tank holds 3820 litres. 5% of the water is used. How many litres are left?
  30. 30.The price of a bicycle is ₹1040. It goes up by 5%. What is the new price (in ₹)?
  31. 31.The price of a school bag changes from ₹1900 to ₹2185. By what percent did it go up?
  32. 32.A water tank holds 2160 litres. 25% of the water is used. How many litres are left?
  33. 33.The price of a bicycle is ₹180. It goes up by 30%. What is the new price (in ₹)?
  34. 34.A water tank holds 3040 litres. 5% of the water is used. How many litres are left?
  35. 35.A town has 3940 people. Its population grows by 5%. How many people live there now?
  36. 36.A water tank holds 340 litres. 50% of the water is used. How many litres are left?
  37. 37.A shop sells 3360 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  38. 38.The price of a bicycle is ₹3640. It goes up by 20%. What is the new price (in ₹)?
  39. 39.A water tank holds 300 litres. 10% of the water is used. How many litres are left?
  40. 40.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =

Answer key

  1. 43
  2. 1500
  3. 82
  4. 69
  5. 1056
  6. 19.25
  7. 50
  8. 990
  9. 171
  10. 1504
  11. 1800
  12. 4623
  13. 2500
  14. 10
  15. 1696
  16. 31.25
  17. 242
  18. 2055
  19. 3555
  20. 1512
  21. 400
  22. 3152
  23. 20
  24. 3.5
  25. 3600
  26. 10
  27. 150
  28. 10
  29. 3629
  30. 1092
  31. 15
  32. 1620
  33. 234
  34. 2888
  35. 4137
  36. 170
  37. 4032
  38. 4368
  39. 270
  40. 27.5

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