← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 6 · 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 shop sells 4660 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  2. 2.A water tank holds 1620 litres. 20% of the water is used. How many litres are left?
  3. 3.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  4. 4.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  5. 5.A price comes down by 25% and then comes down by 25% more. By what percent has it come down in all? =
  6. 6.A water tank holds 420 litres. 40% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹540 to ₹405. By what percent did it come down?
  8. 8.The price of a school bag changes from ₹2880 to ₹1440. By what percent did it come down?
  9. 9.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  10. 10.The price of a school bag changes from ₹3440 to ₹2064. By what percent did it come down?
  11. 11.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  12. 12.The price of a bicycle is ₹260. It goes up by 20%. What is the new price (in ₹)?
  13. 13.The price of a bicycle is ₹1100. It goes up by 5%. What is the new price (in ₹)?
  14. 14.A town has 1680 people. Its population grows by 10%. How many people live there now?
  15. 15.A water tank holds 4300 litres. 50% of the water is used. How many litres are left?
  16. 16.The price of a school bag changes from ₹2240 to ₹1344. By what percent did it come down?
  17. 17.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  18. 18.A price goes up by 50% and then comes down by 25%. By what percent has it gone up in all? =
  19. 19.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
  20. 20.A water tank holds 2940 litres. 50% of the water is used. How many litres are left?
  21. 21.The price of a bicycle is ₹1180. It goes up by 25%. What is the new price (in ₹)?
  22. 22.The price of a school bag changes from ₹3240 to ₹1944. By what percent did it come down?
  23. 23.The price of a school bag changes from ₹2400 to ₹2760. By what percent did it go up?
  24. 24.The price of a school bag changes from ₹2420 to ₹2662. By what percent did it go up?
  25. 25.The price of a school bag changes from ₹3060 to ₹3978. By what percent did it go up?
  26. 26.A shop sells 2140 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  27. 27.The price of a school bag changes from ₹2240 to ₹3360. By what percent did it go up?
  28. 28.The price of a school bag changes from ₹1160 to ₹1740. By what percent did it go up?
  29. 29.The price of a school bag changes from ₹620 to ₹713. By what percent did it go up?
  30. 30.The price of a school bag changes from ₹3020 to ₹3624. By what percent did it go up?
  31. 31.A shop sells 1200 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  32. 32.The price of a bicycle is ₹220. It goes up by 5%. What is the new price (in ₹)?
  33. 33.A water tank holds 3560 litres. 40% of the water is used. How many litres are left?
  34. 34.The price of a school bag changes from ₹4900 to ₹3675. By what percent did it come down?
  35. 35.A water tank holds 2020 litres. 25% of the water is used. How many litres are left?
  36. 36.The price of a school bag changes from ₹3140 to ₹2198. By what percent did it come down?
  37. 37.The price of a school bag changes from ₹940 to ₹893. By what percent did it come down?
  38. 38.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  39. 39.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
  40. 40.The price of a school bag changes from ₹980 to ₹1127. By what percent did it go up?

Answer key

  1. 6524
  2. 1296
  3. 5
  4. 43.75
  5. 43.75
  6. 252
  7. 25
  8. 50
  9. 72.5
  10. 40
  11. 2
  12. 312
  13. 1155
  14. 1848
  15. 2150
  16. 40
  17. 95
  18. 12.5
  19. 24
  20. 1470
  21. 1475
  22. 40
  23. 15
  24. 10
  25. 30
  26. 2568
  27. 50
  28. 50
  29. 15
  30. 20
  31. 1380
  32. 231
  33. 2136
  34. 25
  35. 1515
  36. 30
  37. 5
  38. 72.5
  39. 110
  40. 15

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