← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 531 · 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 town has 920 people. Its population grows by 40%. How many people live there now?
  2. 2.The price of a school bag changes from ₹600 to ₹690. By what percent did it go up?
  3. 3.A water tank holds 3740 litres. 20% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹2460 to ₹3075. By what percent did it go up?
  5. 5.A shop sells 3700 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  6. 6.A shop sells 4080 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  7. 7.The price of a school bag changes from ₹2020 to ₹2424. By what percent did it go up?
  8. 8.The price of a school bag changes from ₹1140 to ₹1026. By what percent did it come down?
  9. 9.A water tank holds 2500 litres. 25% of the water is used. How many litres are left?
  10. 10.The price of a bicycle is ₹1600. It goes up by 5%. What is the new price (in ₹)?
  11. 11.The price of a school bag changes from ₹3200 to ₹3360. By what percent did it go up?
  12. 12.The price of a school bag changes from ₹4840 to ₹6050. By what percent did it go up?
  13. 13.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  14. 14.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  15. 15.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  16. 16.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
  17. 17.The price of a school bag changes from ₹3820 to ₹5730. By what percent did it go up?
  18. 18.A water tank holds 2580 litres. 15% of the water is used. How many litres are left?
  19. 19.A water tank holds 60 litres. 15% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹3980 to ₹5174. By what percent did it go up?
  21. 21.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  22. 22.The price of a school bag changes from ₹1200 to ₹720. By what percent did it come down?
  23. 23.A water tank holds 2040 litres. 10% of the water is used. How many litres are left?
  24. 24.A town has 3880 people. Its population grows by 5%. How many people live there now?
  25. 25.The price of a school bag changes from ₹2260 to ₹2938. By what percent did it go up?
  26. 26.A shop sells 380 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  27. 27.A shop sells 2460 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  28. 28.The price of a bicycle is ₹2340. It goes up by 50%. What is the new price (in ₹)?
  29. 29.A shop sells 1820 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  30. 30.A water tank holds 1820 litres. 40% of the water is used. How many litres are left?
  31. 31.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
  32. 32.A shop sells 2920 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  33. 33.A water tank holds 3840 litres. 10% of the water is used. How many litres are left?
  34. 34.The price of a school bag changes from ₹3080 to ₹1848. By what percent did it come down?
  35. 35.The price of a school bag changes from ₹2360 to ₹3540. By what percent did it go up?
  36. 36.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  37. 37.The price of a school bag changes from ₹4440 to ₹6216. By what percent did it go up?
  38. 38.The price of a school bag changes from ₹3680 to ₹2760. By what percent did it come down?
  39. 39.The price of a school bag changes from ₹300 to ₹345. By what percent did it go up?
  40. 40.The price of a school bag changes from ₹460 to ₹414. By what percent did it come down?

Answer key

  1. 1288
  2. 15
  3. 2992
  4. 25
  5. 3885
  6. 4896
  7. 20
  8. 10
  9. 1875
  10. 1680
  11. 5
  12. 25
  13. 49.5
  14. 31.25
  15. 46
  16. 18.75
  17. 50
  18. 2193
  19. 51
  20. 30
  21. 95
  22. 40
  23. 1836
  24. 4074
  25. 30
  26. 456
  27. 2952
  28. 3510
  29. 2184
  30. 1092
  31. 37
  32. 3066
  33. 3456
  34. 40
  35. 50
  36. 43
  37. 40
  38. 25
  39. 15
  40. 10

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