← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 746 · 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 water tank holds 4800 litres. 15% of the water is used. How many litres are left?
  2. 2.The price of a school bag changes from ₹2580 to ₹3354. By what percent did it go up?
  3. 3.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  4. 4.The price of a school bag changes from ₹1560 to ₹1404. By what percent did it come down?
  5. 5.A water tank holds 3620 litres. 25% of the water is used. How many litres are left?
  6. 6.The price of a school bag changes from ₹3580 to ₹4117. By what percent did it go up?
  7. 7.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  8. 8.A town has 160 people. Its population grows by 30%. How many people live there now?
  9. 9.A town has 660 people. Its population grows by 20%. How many people live there now?
  10. 10.The price of a school bag changes from ₹4660 to ₹2330. By what percent did it come down?
  11. 11.The price of a bicycle is ₹600. It goes up by 20%. What is the new price (in ₹)?
  12. 12.A town has 1080 people. Its population grows by 50%. How many people live there now?
  13. 13.A shop sells 700 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  14. 14.The price of a bicycle is ₹2000. It goes up by 5%. What is the new price (in ₹)?
  15. 15.A shop sells 1300 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  16. 16.A town has 1500 people. Its population grows by 20%. How many people live there now?
  17. 17.A water tank holds 1760 litres. 50% of the water is used. How many litres are left?
  18. 18.The price of a bicycle is ₹1260. It goes up by 15%. What is the new price (in ₹)?
  19. 19.A water tank holds 4360 litres. 10% of the water is used. How many litres are left?
  20. 20.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  21. 21.A water tank holds 1140 litres. 15% of the water is used. How many litres are left?
  22. 22.A water tank holds 4980 litres. 40% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹4480 to ₹4928. By what percent did it go up?
  24. 24.A water tank holds 2460 litres. 10% of the water is used. How many litres are left?
  25. 25.The price of a bicycle is ₹2620. It goes up by 25%. What is the new price (in ₹)?
  26. 26.A water tank holds 3660 litres. 25% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹4520 to ₹4294. By what percent did it come down?
  28. 28.A town has 580 people. Its population grows by 30%. How many people live there now?
  29. 29.A town has 3920 people. Its population grows by 10%. How many people live there now?
  30. 30.The price of a bicycle is ₹3380. It goes up by 25%. What is the new price (in ₹)?
  31. 31.A shop sells 340 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  32. 32.A water tank holds 3560 litres. 5% of the water is used. How many litres are left?
  33. 33.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
  34. 34.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
  35. 35.A water tank holds 480 litres. 5% of the water is used. How many litres are left?
  36. 36.The price of a school bag changes from ₹220 to ₹176. By what percent did it come down?
  37. 37.The price of a bicycle is ₹2880. It goes up by 50%. What is the new price (in ₹)?
  38. 38.A town has 3840 people. Its population grows by 15%. How many people live there now?
  39. 39.A shop sells 4280 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  40. 40.A water tank holds 220 litres. 15% of the water is used. How many litres are left?

Answer key

  1. 4080
  2. 30
  3. 52.5
  4. 10
  5. 2715
  6. 15
  7. 37.5
  8. 208
  9. 792
  10. 50
  11. 720
  12. 1620
  13. 840
  14. 2100
  15. 1820
  16. 1800
  17. 880
  18. 1449
  19. 3924
  20. 47.5
  21. 969
  22. 2988
  23. 10
  24. 2214
  25. 3275
  26. 2745
  27. 5
  28. 754
  29. 4312
  30. 4225
  31. 476
  32. 3382
  33. 44
  34. 33.5
  35. 456
  36. 20
  37. 4320
  38. 4416
  39. 4708
  40. 187

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