← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 12 · 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 4160 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  2. 2.The price of a school bag changes from ₹4820 to ₹3615. By what percent did it come down?
  3. 3.A water tank holds 4880 litres. 5% of the water is used. How many litres are left?
  4. 4.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  5. 5.A price comes down by 40% and then comes down by 40% more. By what percent has it come down in all? =
  6. 6.The price of a bicycle is ₹4360. It goes up by 5%. What is the new price (in ₹)?
  7. 7.A water tank holds 3400 litres. 40% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹3020 to ₹3624. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹1400 to ₹1120. By what percent did it come down?
  10. 10.The price of a school bag changes from ₹340 to ₹510. By what percent did it go up?
  11. 11.The price of a school bag changes from ₹2880 to ₹2592. By what percent did it come down?
  12. 12.A water tank holds 60 litres. 50% of the water is used. How many litres are left?
  13. 13.A water tank holds 3180 litres. 20% of the water is used. How many litres are left?
  14. 14.A town has 1560 people. Its population grows by 20%. How many people live there now?
  15. 15.A price goes up by 50% and then comes down by 30%. By what percent has it gone up in all? =
  16. 16.A town has 840 people. Its population grows by 25%. How many people live there now?
  17. 17.A water tank holds 3720 litres. 25% of the water is used. How many litres are left?
  18. 18.The price of a school bag changes from ₹600 to ₹360. By what percent did it come down?
  19. 19.The price of a bicycle is ₹1120. It goes up by 20%. What is the new price (in ₹)?
  20. 20.The price of a school bag changes from ₹1440 to ₹1800. By what percent did it go up?
  21. 21.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  22. 22.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
  23. 23.The price of a school bag changes from ₹520 to ₹442. By what percent did it come down?
  24. 24.A water tank holds 4220 litres. 40% of the water is used. How many litres are left?
  25. 25.The price of a bicycle is ₹900. It goes up by 20%. What is the new price (in ₹)?
  26. 26.The price of a bicycle is ₹2980. It goes up by 30%. What is the new price (in ₹)?
  27. 27.A water tank holds 1960 litres. 10% of the water is used. How many litres are left?
  28. 28.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  29. 29.A water tank holds 4860 litres. 40% of the water is used. How many litres are left?
  30. 30.A shop sells 600 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  31. 31.A town has 1440 people. Its population grows by 30%. How many people live there now?
  32. 32.The price of a bicycle is ₹300. It goes up by 50%. What is the new price (in ₹)?
  33. 33.The price of a school bag changes from ₹800 to ₹920. By what percent did it go up?
  34. 34.The price of a school bag changes from ₹2780 to ₹2363. By what percent did it come down?
  35. 35.A town has 620 people. Its population grows by 25%. How many people live there now?
  36. 36.A water tank holds 1520 litres. 20% of the water is used. How many litres are left?
  37. 37.A water tank holds 3760 litres. 10% of the water is used. How many litres are left?
  38. 38.A water tank holds 2420 litres. 10% of the water is used. How many litres are left?
  39. 39.A water tank holds 4720 litres. 5% of the water is used. How many litres are left?
  40. 40.A shop sells 3680 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?

Answer key

  1. 5200
  2. 25
  3. 4636
  4. 37.5
  5. 64
  6. 4578
  7. 2040
  8. 20
  9. 20
  10. 50
  11. 10
  12. 30
  13. 2544
  14. 1872
  15. 5
  16. 1050
  17. 2790
  18. 40
  19. 1344
  20. 25
  21. 40.5
  22. 110
  23. 15
  24. 2532
  25. 1080
  26. 3874
  27. 1764
  28. 26
  29. 2916
  30. 780
  31. 1872
  32. 450
  33. 15
  34. 15
  35. 775
  36. 1216
  37. 3384
  38. 2178
  39. 4484
  40. 5520

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