← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 794 · 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.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  3. 3.The price of a school bag changes from ₹1420 to ₹1562. By what percent did it go up?
  4. 4.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  5. 5.A shop sells 280 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  6. 6.The price of a school bag changes from ₹1140 to ₹1254. By what percent did it go up?
  7. 7.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  8. 8.The price of a school bag changes from ₹2040 to ₹1734. By what percent did it come down?
  9. 9.A water tank holds 3540 litres. 25% of the water is used. How many litres are left?
  10. 10.A town has 1480 people. Its population grows by 40%. How many people live there now?
  11. 11.The price of a school bag changes from ₹1100 to ₹1320. By what percent did it go up?
  12. 12.The price of a school bag changes from ₹1420 to ₹1491. By what percent did it go up?
  13. 13.The price of a school bag changes from ₹2640 to ₹3960. By what percent did it go up?
  14. 14.The price of a school bag changes from ₹4000 to ₹4600. By what percent did it go up?
  15. 15.A town has 2960 people. Its population grows by 30%. How many people live there now?
  16. 16.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  17. 17.The price of a school bag changes from ₹1660 to ₹2490. By what percent did it go up?
  18. 18.A town has 4580 people. Its population grows by 50%. How many people live there now?
  19. 19.The price of a school bag changes from ₹3280 to ₹2460. By what percent did it come down?
  20. 20.The price of a bicycle is ₹1820. It goes up by 10%. What is the new price (in ₹)?
  21. 21.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
  22. 22.The price of a school bag changes from ₹560 to ₹504. By what percent did it come down?
  23. 23.The price of a school bag changes from ₹2720 to ₹2856. By what percent did it go up?
  24. 24.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
  25. 25.A water tank holds 360 litres. 30% of the water is used. How many litres are left?
  26. 26.A water tank holds 1160 litres. 5% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹240 to ₹216. By what percent did it come down?
  28. 28.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  29. 29.A water tank holds 2980 litres. 50% of the water is used. How many litres are left?
  30. 30.The price of a bicycle is ₹1620. It goes up by 10%. What is the new price (in ₹)?
  31. 31.The price of a school bag changes from ₹2180 to ₹2071. By what percent did it come down?
  32. 32.The price of a school bag changes from ₹4280 to ₹3852. By what percent did it come down?
  33. 33.A shop sells 1720 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  34. 34.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  35. 35.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =
  36. 36.A water tank holds 2720 litres. 50% of the water is used. How many litres are left?
  37. 37.The price of a bicycle is ₹3180. It goes up by 15%. What is the new price (in ₹)?
  38. 38.The price of a school bag changes from ₹1800 to ₹1980. By what percent did it go up?
  39. 39.The price of a bicycle is ₹580. It goes up by 25%. What is the new price (in ₹)?
  40. 40.A town has 4300 people. Its population grows by 50%. How many people live there now?

Answer key

  1. 49
  2. 14.5
  3. 10
  4. 37
  5. 392
  6. 10
  7. 52
  8. 15
  9. 2655
  10. 2072
  11. 20
  12. 5
  13. 50
  14. 15
  15. 3848
  16. 46
  17. 50
  18. 6870
  19. 25
  20. 2002
  21. 44
  22. 10
  23. 5
  24. 62.5
  25. 252
  26. 1102
  27. 10
  28. 15.5
  29. 1490
  30. 1782
  31. 5
  32. 10
  33. 2236
  34. 32
  35. 62.5
  36. 1360
  37. 3657
  38. 10
  39. 725
  40. 6450

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