← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 261 · 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 ₹2820 to ₹3948. By what percent did it go up?
  2. 2.The price of a school bag changes from ₹120 to ₹132. By what percent did it go up?
  3. 3.A water tank holds 2360 litres. 40% of the water is used. How many litres are left?
  4. 4.A water tank holds 1740 litres. 50% of the water is used. How many litres are left?
  5. 5.A water tank holds 2980 litres. 15% of the water is used. How many litres are left?
  6. 6.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  7. 7.A shop sells 4400 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  8. 8.A shop sells 2100 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  9. 9.The price of a school bag changes from ₹620 to ₹651. By what percent did it go up?
  10. 10.The price of a school bag changes from ₹3100 to ₹2790. By what percent did it come down?
  11. 11.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
  12. 12.The price of a school bag changes from ₹4160 to ₹3120. By what percent did it come down?
  13. 13.The price of a school bag changes from ₹1720 to ₹1548. By what percent did it come down?
  14. 14.A shop sells 4300 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  15. 15.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
  16. 16.A price goes up by 50% and then comes down by 30%. By what percent has it gone up in all? =
  17. 17.A water tank holds 4160 litres. 15% of the water is used. How many litres are left?
  18. 18.The price of a school bag changes from ₹4840 to ₹4356. By what percent did it come down?
  19. 19.A town has 560 people. Its population grows by 15%. How many people live there now?
  20. 20.A water tank holds 3600 litres. 40% of the water is used. How many litres are left?
  21. 21.A water tank holds 4560 litres. 40% of the water is used. How many litres are left?
  22. 22.A water tank holds 1900 litres. 50% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹2540 to ₹1524. By what percent did it come down?
  24. 24.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  25. 25.A water tank holds 360 litres. 40% of the water is used. How many litres are left?
  26. 26.The price of a bicycle is ₹2440. It goes up by 40%. What is the new price (in ₹)?
  27. 27.A town has 720 people. Its population grows by 5%. How many people live there now?
  28. 28.A water tank holds 4240 litres. 15% of the water is used. How many litres are left?
  29. 29.The price of a bicycle is ₹3400. It goes up by 50%. What is the new price (in ₹)?
  30. 30.A water tank holds 2060 litres. 50% of the water is used. How many litres are left?
  31. 31.The price of a bicycle is ₹2020. It goes up by 50%. What is the new price (in ₹)?
  32. 32.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
  33. 33.A water tank holds 3260 litres. 10% of the water is used. How many litres are left?
  34. 34.A shop sells 4040 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  35. 35.A price goes up by 40% and then goes up by 25% more. By what percent has it gone up in all? =
  36. 36.The price of a school bag changes from ₹400 to ₹340. By what percent did it come down?
  37. 37.The price of a bicycle is ₹3420. It goes up by 10%. What is the new price (in ₹)?
  38. 38.The price of a school bag changes from ₹2220 to ₹1110. By what percent did it come down?
  39. 39.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
  40. 40.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =

Answer key

  1. 40
  2. 10
  3. 1416
  4. 870
  5. 2533
  6. 26
  7. 5720
  8. 2940
  9. 5
  10. 10
  11. 42.5
  12. 25
  13. 10
  14. 4945
  15. 26
  16. 5
  17. 3536
  18. 10
  19. 644
  20. 2160
  21. 2736
  22. 950
  23. 40
  24. 43.75
  25. 216
  26. 3416
  27. 756
  28. 3604
  29. 5100
  30. 1030
  31. 3030
  32. 62.5
  33. 2934
  34. 4646
  35. 75
  36. 15
  37. 3762
  38. 50
  39. 44
  40. 23.5

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude