← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 522 · 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 shop sells 3460 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  2. 2.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  3. 3.The price of a school bag changes from ₹4960 to ₹4216. By what percent did it come down?
  4. 4.A water tank holds 1480 litres. 30% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹1840 to ₹2024. By what percent did it go up?
  6. 6.A water tank holds 3560 litres. 5% of the water is used. How many litres are left?
  7. 7.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  8. 8.A price comes down by 20% and then comes down by 10% more. By what percent has it come down in all? =
  9. 9.The price of a bicycle is ₹4860. It goes up by 50%. What is the new price (in ₹)?
  10. 10.A water tank holds 2120 litres. 15% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹2180 to ₹2289. By what percent did it go up?
  12. 12.A shop sells 4900 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  13. 13.The price of a school bag changes from ₹3100 to ₹3565. By what percent did it go up?
  14. 14.The price of a school bag changes from ₹560 to ₹840. By what percent did it go up?
  15. 15.A town has 2360 people. Its population grows by 15%. How many people live there now?
  16. 16.A shop sells 1500 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  17. 17.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  18. 18.A shop sells 4440 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  19. 19.The price of a bicycle is ₹2520. It goes up by 15%. What is the new price (in ₹)?
  20. 20.A water tank holds 4080 litres. 5% of the water is used. How many litres are left?
  21. 21.A water tank holds 1660 litres. 15% of the water is used. How many litres are left?
  22. 22.The price of a bicycle is ₹4260. It goes up by 10%. What is the new price (in ₹)?
  23. 23.The price of a school bag changes from ₹4760 to ₹7140. By what percent did it go up?
  24. 24.The price of a school bag changes from ₹1400 to ₹1680. By what percent did it go up?
  25. 25.A town has 560 people. Its population grows by 5%. How many people live there now?
  26. 26.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  27. 27.The price of a school bag changes from ₹2380 to ₹1785. By what percent did it come down?
  28. 28.The price of a school bag changes from ₹3240 to ₹3726. By what percent did it go up?
  29. 29.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
  30. 30.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  31. 31.A water tank holds 4360 litres. 15% of the water is used. How many litres are left?
  32. 32.A town has 1760 people. Its population grows by 50%. How many people live there now?
  33. 33.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  34. 34.A water tank holds 1440 litres. 30% of the water is used. How many litres are left?
  35. 35.The price of a bicycle is ₹1640. It goes up by 5%. What is the new price (in ₹)?
  36. 36.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  37. 37.A water tank holds 1140 litres. 25% of the water is used. How many litres are left?
  38. 38.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
  39. 39.A water tank holds 2500 litres. 40% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹1760 to ₹1408. By what percent did it come down?

Answer key

  1. 3633
  2. 4
  3. 15
  4. 1036
  5. 10
  6. 3382
  7. 15.5
  8. 28
  9. 7290
  10. 1802
  11. 5
  12. 5390
  13. 15
  14. 50
  15. 2714
  16. 1575
  17. 5
  18. 6216
  19. 2898
  20. 3876
  21. 1411
  22. 4686
  23. 50
  24. 20
  25. 588
  26. 26.5
  27. 25
  28. 15
  29. 24
  30. 62.5
  31. 3706
  32. 2640
  33. 23.5
  34. 1008
  35. 1722
  36. 60
  37. 855
  38. 33.5
  39. 1500
  40. 20

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