← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 294 · 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 town has 1640 people. Its population grows by 10%. How many people live there now?
  2. 2.A town has 4260 people. Its population grows by 30%. How many people live there now?
  3. 3.The price of a school bag changes from ₹1080 to ₹756. By what percent did it come down?
  4. 4.The price of a school bag changes from ₹640 to ₹800. By what percent did it go up?
  5. 5.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  6. 6.The price of a school bag changes from ₹740 to ₹370. By what percent did it come down?
  7. 7.The price of a bicycle is ₹1060. It goes up by 40%. What is the new price (in ₹)?
  8. 8.A shop sells 1480 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  9. 9.The price of a school bag changes from ₹4760 to ₹4998. By what percent did it go up?
  10. 10.The price of a bicycle is ₹4860. It goes up by 20%. What is the new price (in ₹)?
  11. 11.The price of a school bag changes from ₹2740 to ₹3562. By what percent did it go up?
  12. 12.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  13. 13.The price of a school bag changes from ₹280 to ₹140. By what percent did it come down?
  14. 14.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  15. 15.The price of a school bag changes from ₹2380 to ₹3332. By what percent did it go up?
  16. 16.A water tank holds 3180 litres. 10% of the water is used. How many litres are left?
  17. 17.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  18. 18.The price of a bicycle is ₹4060. It goes up by 30%. What is the new price (in ₹)?
  19. 19.A water tank holds 980 litres. 15% of the water is used. How many litres are left?
  20. 20.A shop sells 1840 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  21. 21.A shop sells 1300 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  22. 22.A water tank holds 160 litres. 25% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹320 to ₹480. By what percent did it go up?
  24. 24.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  25. 25.A town has 1500 people. Its population grows by 40%. How many people live there now?
  26. 26.The price of a bicycle is ₹80. It goes up by 30%. What is the new price (in ₹)?
  27. 27.The price of a bicycle is ₹1880. It goes up by 15%. What is the new price (in ₹)?
  28. 28.The price of a school bag changes from ₹2260 to ₹1921. By what percent did it come down?
  29. 29.A shop sells 1960 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  30. 30.The price of a bicycle is ₹140. It goes up by 15%. What is the new price (in ₹)?
  31. 31.A water tank holds 4500 litres. 25% of the water is used. How many litres are left?
  32. 32.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  33. 33.The price of a school bag changes from ₹3980 to ₹3383. By what percent did it come down?
  34. 34.A town has 3200 people. Its population grows by 15%. How many people live there now?
  35. 35.The price of a school bag changes from ₹860 to ₹1075. By what percent did it go up?
  36. 36.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  37. 37.A shop sells 3720 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  38. 38.The price of a bicycle is ₹420. It goes up by 10%. What is the new price (in ₹)?
  39. 39.A town has 4820 people. Its population grows by 5%. How many people live there now?
  40. 40.The price of a school bag changes from ₹2220 to ₹2331. By what percent did it go up?

Answer key

  1. 1804
  2. 5538
  3. 30
  4. 25
  5. 27.5
  6. 50
  7. 1484
  8. 1554
  9. 5
  10. 5832
  11. 30
  12. 28
  13. 50
  14. 80
  15. 40
  16. 2862
  17. 46
  18. 5278
  19. 833
  20. 2576
  21. 1690
  22. 120
  23. 50
  24. 52.5
  25. 2100
  26. 104
  27. 2162
  28. 15
  29. 2254
  30. 161
  31. 3375
  32. 20.75
  33. 15
  34. 3680
  35. 25
  36. 2
  37. 5208
  38. 462
  39. 5061
  40. 5

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