← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 96 · 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 ₹3460 to ₹3806. By what percent did it go up?
  2. 2.The price of a bicycle is ₹1620. It goes up by 40%. What is the new price (in ₹)?
  3. 3.A water tank holds 3260 litres. 20% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹420 to ₹294. By what percent did it come down?
  5. 5.The price of a bicycle is ₹3960. It goes up by 5%. What is the new price (in ₹)?
  6. 6.A water tank holds 1820 litres. 50% of the water is used. How many litres are left?
  7. 7.A water tank holds 4880 litres. 50% of the water is used. How many litres are left?
  8. 8.The price of a bicycle is ₹460. It goes up by 40%. What is the new price (in ₹)?
  9. 9.A shop sells 2240 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  10. 10.A shop sells 2360 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  11. 11.A water tank holds 3420 litres. 30% of the water is used. How many litres are left?
  12. 12.The price of a school bag changes from ₹3360 to ₹3696. By what percent did it go up?
  13. 13.The price of a bicycle is ₹2180. It goes up by 5%. What is the new price (in ₹)?
  14. 14.A water tank holds 4760 litres. 20% of the water is used. How many litres are left?
  15. 15.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  16. 16.The price of a school bag changes from ₹4140 to ₹3726. By what percent did it come down?
  17. 17.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  18. 18.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
  19. 19.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  20. 20.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  21. 21.The price of a bicycle is ₹3700. It goes up by 15%. What is the new price (in ₹)?
  22. 22.A town has 2200 people. Its population grows by 25%. How many people live there now?
  23. 23.A town has 700 people. Its population grows by 20%. How many people live there now?
  24. 24.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
  25. 25.A water tank holds 3380 litres. 5% of the water is used. How many litres are left?
  26. 26.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  27. 27.A water tank holds 1200 litres. 5% of the water is used. How many litres are left?
  28. 28.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  29. 29.The price of a school bag changes from ₹1260 to ₹1323. By what percent did it go up?
  30. 30.The price of a bicycle is ₹2900. It goes up by 40%. What is the new price (in ₹)?
  31. 31.The price of a school bag changes from ₹880 to ₹704. By what percent did it come down?
  32. 32.A water tank holds 1560 litres. 30% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹2740 to ₹3014. By what percent did it go up?
  34. 34.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
  35. 35.A water tank holds 1000 litres. 20% of the water is used. How many litres are left?
  36. 36.A water tank holds 700 litres. 5% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹2900 to ₹3045. By what percent did it go up?
  38. 38.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
  39. 39.The price of a school bag changes from ₹3460 to ₹4498. By what percent did it go up?
  40. 40.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =

Answer key

  1. 10
  2. 2268
  3. 2608
  4. 30
  5. 4158
  6. 910
  7. 2440
  8. 644
  9. 2464
  10. 3068
  11. 2394
  12. 10
  13. 2289
  14. 3808
  15. 47.5
  16. 10
  17. 57.5
  18. 56
  19. 95
  20. 52.5
  21. 4255
  22. 2750
  23. 840
  24. 10.25
  25. 3211
  26. 36.5
  27. 1140
  28. 33
  29. 5
  30. 4060
  31. 20
  32. 1092
  33. 10
  34. 12
  35. 800
  36. 665
  37. 5
  38. 38
  39. 30
  40. 55

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