← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 607 · 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 ₹4060 to ₹3857. By what percent did it come down?
  2. 2.A water tank holds 1680 litres. 20% of the water is used. How many litres are left?
  3. 3.The price of a school bag changes from ₹4540 to ₹2724. By what percent did it come down?
  4. 4.The price of a bicycle is ₹1360. It goes up by 10%. What is the new price (in ₹)?
  5. 5.The price of a school bag changes from ₹3780 to ₹2646. By what percent did it come down?
  6. 6.The price of a bicycle is ₹2840. It goes up by 15%. What is the new price (in ₹)?
  7. 7.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  8. 8.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  9. 9.The price of a school bag changes from ₹80 to ₹72. By what percent did it come down?
  10. 10.A water tank holds 3120 litres. 5% of the water is used. How many litres are left?
  11. 11.A shop sells 3300 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  12. 12.The price of a school bag changes from ₹400 to ₹480. By what percent did it go up?
  13. 13.The price of a school bag changes from ₹1540 to ₹1078. By what percent did it come down?
  14. 14.The price of a school bag changes from ₹180 to ₹198. By what percent did it go up?
  15. 15.A town has 840 people. Its population grows by 20%. How many people live there now?
  16. 16.A water tank holds 200 litres. 15% of the water is used. How many litres are left?
  17. 17.A water tank holds 540 litres. 50% of the water is used. How many litres are left?
  18. 18.A water tank holds 240 litres. 20% of the water is used. How many litres are left?
  19. 19.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
  20. 20.A water tank holds 1980 litres. 50% of the water is used. How many litres are left?
  21. 21.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  22. 22.The price of a school bag changes from ₹3020 to ₹3775. By what percent did it go up?
  23. 23.The price of a school bag changes from ₹1260 to ₹1512. By what percent did it go up?
  24. 24.A water tank holds 4660 litres. 40% of the water is used. How many litres are left?
  25. 25.A water tank holds 620 litres. 5% of the water is used. How many litres are left?
  26. 26.A water tank holds 3820 litres. 50% of the water is used. How many litres are left?
  27. 27.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  28. 28.A water tank holds 4800 litres. 40% of the water is used. How many litres are left?
  29. 29.A town has 1000 people. Its population grows by 40%. How many people live there now?
  30. 30.A shop sells 1120 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  31. 31.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  32. 32.The price of a school bag changes from ₹860 to ₹1032. By what percent did it go up?
  33. 33.The price of a bicycle is ₹960. It goes up by 15%. What is the new price (in ₹)?
  34. 34.A town has 4380 people. Its population grows by 10%. How many people live there now?
  35. 35.The price of a bicycle is ₹580. It goes up by 10%. What is the new price (in ₹)?
  36. 36.A water tank holds 60 litres. 25% of the water is used. How many litres are left?
  37. 37.The price of a bicycle is ₹4220. It goes up by 25%. What is the new price (in ₹)?
  38. 38.A shop sells 1040 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  39. 39.A water tank holds 580 litres. 10% of the water is used. How many litres are left?
  40. 40.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =

Answer key

  1. 5
  2. 1344
  3. 40
  4. 1496
  5. 30
  6. 3266
  7. 9.25
  8. 19.25
  9. 10
  10. 2964
  11. 4290
  12. 20
  13. 30
  14. 10
  15. 1008
  16. 170
  17. 270
  18. 192
  19. 96
  20. 990
  21. 32
  22. 25
  23. 20
  24. 2796
  25. 589
  26. 1910
  27. 95
  28. 2880
  29. 1400
  30. 1400
  31. 43.75
  32. 20
  33. 1104
  34. 4818
  35. 638
  36. 45
  37. 5275
  38. 1196
  39. 522
  40. 58

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