← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 48 · 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 ₹2500 to ₹2750. By what percent did it go up?
  2. 2.The price of a bicycle is ₹60. It goes up by 30%. What is the new price (in ₹)?
  3. 3.A water tank holds 980 litres. 30% of the water is used. How many litres are left?
  4. 4.A price goes up by 20% and then goes up by 20% more. By what percent has it gone up in all? =
  5. 5.The price of a school bag changes from ₹4880 to ₹5124. By what percent did it go up?
  6. 6.A town has 160 people. Its population grows by 10%. How many people live there now?
  7. 7.A town has 3560 people. Its population grows by 30%. How many people live there now?
  8. 8.The price of a bicycle is ₹3540. It goes up by 5%. What is the new price (in ₹)?
  9. 9.A water tank holds 1240 litres. 50% of the water is used. How many litres are left?
  10. 10.A town has 1000 people. Its population grows by 15%. How many people live there now?
  11. 11.A water tank holds 2500 litres. 10% of the water is used. How many litres are left?
  12. 12.The price of a school bag changes from ₹2520 to ₹2646. By what percent did it go up?
  13. 13.The price of a school bag changes from ₹4520 to ₹5198. By what percent did it go up?
  14. 14.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  15. 15.The price of a school bag changes from ₹600 to ₹900. By what percent did it go up?
  16. 16.A town has 1240 people. Its population grows by 10%. How many people live there now?
  17. 17.The price of a bicycle is ₹2500. It goes up by 50%. What is the new price (in ₹)?
  18. 18.The price of a school bag changes from ₹600 to ₹780. By what percent did it go up?
  19. 19.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  20. 20.A shop sells 4080 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  21. 21.The price of a school bag changes from ₹2160 to ₹2052. By what percent did it come down?
  22. 22.A water tank holds 920 litres. 15% of the water is used. How many litres are left?
  23. 23.A water tank holds 4140 litres. 25% of the water is used. How many litres are left?
  24. 24.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
  25. 25.The price of a school bag changes from ₹980 to ₹735. By what percent did it come down?
  26. 26.The price of a school bag changes from ₹1420 to ₹1065. By what percent did it come down?
  27. 27.A water tank holds 280 litres. 15% of the water is used. How many litres are left?
  28. 28.A town has 2580 people. Its population grows by 50%. How many people live there now?
  29. 29.The price of a school bag changes from ₹2380 to ₹1190. By what percent did it come down?
  30. 30.The price of a bicycle is ₹2780. It goes up by 25%. What is the new price (in ₹)?
  31. 31.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  32. 32.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  33. 33.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  34. 34.The price of a school bag changes from ₹3940 to ₹2758. By what percent did it come down?
  35. 35.The price of a bicycle is ₹3480. It goes up by 25%. What is the new price (in ₹)?
  36. 36.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  37. 37.A water tank holds 200 litres. 50% of the water is used. How many litres are left?
  38. 38.A shop sells 300 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  39. 39.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  40. 40.The price of a school bag changes from ₹780 to ₹858. By what percent did it go up?

Answer key

  1. 10
  2. 78
  3. 686
  4. 44
  5. 5
  6. 176
  7. 4628
  8. 3717
  9. 620
  10. 1150
  11. 2250
  12. 5
  13. 15
  14. 20
  15. 50
  16. 1364
  17. 3750
  18. 30
  19. 43
  20. 6120
  21. 5
  22. 782
  23. 3105
  24. 54
  25. 25
  26. 25
  27. 238
  28. 3870
  29. 50
  30. 3475
  31. 36.5
  32. 54
  33. 52.5
  34. 30
  35. 4350
  36. 57.5
  37. 100
  38. 360
  39. 5
  40. 10

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