← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 487 · 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 ₹5000 to ₹4500. By what percent did it come down?
  2. 2.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  3. 3.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
  4. 4.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  5. 5.A water tank holds 2000 litres. 40% of the water is used. How many litres are left?
  6. 6.A water tank holds 400 litres. 40% of the water is used. How many litres are left?
  7. 7.A shop sells 1900 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  8. 8.The price of a bicycle is ₹4980. It goes up by 50%. What is the new price (in ₹)?
  9. 9.The price of a school bag changes from ₹3060 to ₹3366. By what percent did it go up?
  10. 10.A price comes down by 20% and then comes down by 20% more. By what percent has it come down in all? =
  11. 11.A shop sells 360 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  12. 12.A town has 2380 people. Its population grows by 50%. How many people live there now?
  13. 13.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  14. 14.The price of a bicycle is ₹4960. It goes up by 20%. What is the new price (in ₹)?
  15. 15.The price of a school bag changes from ₹1640 to ₹1230. By what percent did it come down?
  16. 16.The price of a bicycle is ₹680. It goes up by 10%. What is the new price (in ₹)?
  17. 17.The price of a school bag changes from ₹4480 to ₹4704. By what percent did it go up?
  18. 18.The price of a school bag changes from ₹2200 to ₹2860. By what percent did it go up?
  19. 19.A price comes down by 25% and then comes down by 20% more. By what percent has it come down in all? =
  20. 20.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  21. 21.The price of a school bag changes from ₹220 to ₹308. By what percent did it go up?
  22. 22.A water tank holds 2040 litres. 30% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹3420 to ₹2907. By what percent did it come down?
  24. 24.The price of a bicycle is ₹920. It goes up by 50%. What is the new price (in ₹)?
  25. 25.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  26. 26.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  27. 27.The price of a school bag changes from ₹3780 to ₹2268. By what percent did it come down?
  28. 28.A price goes up by 30% and then goes up by 20% more. By what percent has it gone up in all? =
  29. 29.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
  30. 30.The price of a bicycle is ₹1380. It goes up by 30%. What is the new price (in ₹)?
  31. 31.A town has 840 people. Its population grows by 50%. How many people live there now?
  32. 32.A town has 2920 people. Its population grows by 10%. How many people live there now?
  33. 33.The price of a school bag changes from ₹4420 to ₹2210. By what percent did it come down?
  34. 34.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
  35. 35.The price of a school bag changes from ₹3680 to ₹1840. By what percent did it come down?
  36. 36.A water tank holds 3680 litres. 30% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹4640 to ₹2320. By what percent did it come down?
  38. 38.A water tank holds 160 litres. 10% of the water is used. How many litres are left?
  39. 39.A shop sells 1140 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  40. 40.The price of a bicycle is ₹3120. It goes up by 10%. What is the new price (in ₹)?

Answer key

  1. 10
  2. 21
  3. 125
  4. 12.5
  5. 1200
  6. 240
  7. 2280
  8. 7470
  9. 10
  10. 36
  11. 468
  12. 3570
  13. 32.5
  14. 5952
  15. 25
  16. 748
  17. 5
  18. 30
  19. 40
  20. 50
  21. 40
  22. 1428
  23. 15
  24. 1380
  25. 32.25
  26. 61
  27. 40
  28. 56
  29. 58
  30. 1794
  31. 1260
  32. 3212
  33. 50
  34. 68
  35. 50
  36. 2576
  37. 50
  38. 144
  39. 1197
  40. 3432

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