← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 393 · 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 goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  2. 2.The price of a bicycle is ₹1540. It goes up by 5%. What is the new price (in ₹)?
  3. 3.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  4. 4.A town has 1940 people. Its population grows by 30%. How many people live there now?
  5. 5.The price of a bicycle is ₹340. It goes up by 15%. What is the new price (in ₹)?
  6. 6.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  7. 7.The price of a school bag changes from ₹2280 to ₹2850. By what percent did it go up?
  8. 8.A town has 720 people. Its population grows by 20%. How many people live there now?
  9. 9.A shop sells 320 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  10. 10.A town has 1440 people. Its population grows by 5%. How many people live there now?
  11. 11.The price of a school bag changes from ₹620 to ₹682. By what percent did it go up?
  12. 12.A water tank holds 520 litres. 5% of the water is used. How many litres are left?
  13. 13.A water tank holds 4920 litres. 10% of the water is used. How many litres are left?
  14. 14.A water tank holds 120 litres. 25% of the water is used. How many litres are left?
  15. 15.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  16. 16.A shop sells 1040 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  17. 17.The price of a school bag changes from ₹2300 to ₹1955. By what percent did it come down?
  18. 18.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  19. 19.The price of a bicycle is ₹340. It goes up by 10%. What is the new price (in ₹)?
  20. 20.A water tank holds 2020 litres. 25% of the water is used. How many litres are left?
  21. 21.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  22. 22.The price of a school bag changes from ₹2100 to ₹1785. By what percent did it come down?
  23. 23.The price of a bicycle is ₹860. It goes up by 5%. What is the new price (in ₹)?
  24. 24.The price of a bicycle is ₹4320. It goes up by 5%. What is the new price (in ₹)?
  25. 25.The price of a school bag changes from ₹2580 to ₹1548. By what percent did it come down?
  26. 26.The price of a bicycle is ₹3160. It goes up by 40%. What is the new price (in ₹)?
  27. 27.The price of a school bag changes from ₹4560 to ₹3192. By what percent did it come down?
  28. 28.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  29. 29.The price of a school bag changes from ₹4340 to ₹6076. By what percent did it go up?
  30. 30.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  31. 31.A price goes up by 25% and then comes down by 15%. By what percent has it gone up in all? =
  32. 32.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  33. 33.A water tank holds 440 litres. 25% of the water is used. How many litres are left?
  34. 34.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  35. 35.A water tank holds 1840 litres. 20% of the water is used. How many litres are left?
  36. 36.The price of a bicycle is ₹1080. It goes up by 10%. What is the new price (in ₹)?
  37. 37.The price of a school bag changes from ₹4900 to ₹3920. By what percent did it come down?
  38. 38.The price of a school bag changes from ₹320 to ₹416. By what percent did it go up?
  39. 39.A shop sells 1780 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  40. 40.A town has 3400 people. Its population grows by 15%. How many people live there now?

Answer key

  1. 72.5
  2. 1617
  3. 31.25
  4. 2522
  5. 391
  6. 43
  7. 25
  8. 864
  9. 400
  10. 1512
  11. 10
  12. 494
  13. 4428
  14. 90
  15. 26.5
  16. 1560
  17. 15
  18. 26
  19. 374
  20. 1515
  21. 14
  22. 15
  23. 903
  24. 4536
  25. 40
  26. 4424
  27. 30
  28. 5
  29. 40
  30. 33.5
  31. 6.25
  32. 43
  33. 330
  34. 56.25
  35. 1472
  36. 1188
  37. 20
  38. 30
  39. 1869
  40. 3910

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