← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 637 · 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 price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
  2. 2.The price of a school bag changes from ₹2160 to ₹2808. By what percent did it go up?
  3. 3.The price of a school bag changes from ₹740 to ₹1036. By what percent did it go up?
  4. 4.A shop sells 1100 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  5. 5.A price goes up by 20% and then goes up by 25% more. By what percent has it gone up in all? =
  6. 6.A water tank holds 2060 litres. 50% of the water is used. How many litres are left?
  7. 7.A town has 3120 people. Its population grows by 30%. How many people live there now?
  8. 8.The price of a school bag changes from ₹1620 to ₹1377. By what percent did it come down?
  9. 9.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
  10. 10.A shop sells 3520 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  11. 11.A water tank holds 1340 litres. 40% of the water is used. How many litres are left?
  12. 12.The price of a bicycle is ₹240. It goes up by 10%. What is the new price (in ₹)?
  13. 13.The price of a school bag changes from ₹1900 to ₹1520. By what percent did it come down?
  14. 14.A water tank holds 4400 litres. 5% of the water is used. How many litres are left?
  15. 15.A water tank holds 800 litres. 15% of the water is used. How many litres are left?
  16. 16.A water tank holds 1480 litres. 15% of the water is used. How many litres are left?
  17. 17.A water tank holds 240 litres. 5% of the water is used. How many litres are left?
  18. 18.The price of a bicycle is ₹420. It goes up by 25%. What is the new price (in ₹)?
  19. 19.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  20. 20.The price of a bicycle is ₹4780. It goes up by 50%. What is the new price (in ₹)?
  21. 21.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
  22. 22.A water tank holds 4440 litres. 15% of the water is used. How many litres are left?
  23. 23.A town has 4680 people. Its population grows by 20%. How many people live there now?
  24. 24.The price of a bicycle is ₹1440. It goes up by 20%. What is the new price (in ₹)?
  25. 25.The price of a school bag changes from ₹4740 to ₹5451. By what percent did it go up?
  26. 26.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
  27. 27.The price of a bicycle is ₹760. It goes up by 20%. What is the new price (in ₹)?
  28. 28.A water tank holds 3420 litres. 20% of the water is used. How many litres are left?
  29. 29.A water tank holds 1340 litres. 10% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹2740 to ₹1918. By what percent did it come down?
  31. 31.The price of a school bag changes from ₹260 to ₹234. By what percent did it come down?
  32. 32.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
  33. 33.The price of a school bag changes from ₹1040 to ₹1560. By what percent did it go up?
  34. 34.A water tank holds 4620 litres. 40% of the water is used. How many litres are left?
  35. 35.A water tank holds 4440 litres. 40% of the water is used. How many litres are left?
  36. 36.The price of a bicycle is ₹2580. It goes up by 5%. What is the new price (in ₹)?
  37. 37.The price of a bicycle is ₹1020. It goes up by 10%. What is the new price (in ₹)?
  38. 38.A town has 3480 people. Its population grows by 30%. How many people live there now?
  39. 39.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  40. 40.A water tank holds 2040 litres. 40% of the water is used. How many litres are left?

Answer key

  1. 49
  2. 30
  3. 40
  4. 1210
  5. 50
  6. 1030
  7. 4056
  8. 15
  9. 37
  10. 4048
  11. 804
  12. 264
  13. 20
  14. 4180
  15. 680
  16. 1258
  17. 228
  18. 525
  19. 27.75
  20. 7170
  21. 47
  22. 3774
  23. 5616
  24. 1728
  25. 15
  26. 110
  27. 912
  28. 2736
  29. 1206
  30. 30
  31. 10
  32. 57.5
  33. 50
  34. 2772
  35. 2664
  36. 2709
  37. 1122
  38. 4524
  39. 43
  40. 1224

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