← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 680 · 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 bicycle is ₹4780. It goes up by 15%. What is the new price (in ₹)?
  2. 2.The price of a school bag changes from ₹3320 to ₹2822. By what percent did it come down?
  3. 3.A price comes down by 40% and then comes down by 40% more. By what percent has it come down in all? =
  4. 4.A shop sells 1520 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  5. 5.The price of a school bag changes from ₹2220 to ₹1110. By what percent did it come down?
  6. 6.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  7. 7.The price of a school bag changes from ₹3340 to ₹2839. By what percent did it come down?
  8. 8.The price of a school bag changes from ₹3080 to ₹3234. By what percent did it go up?
  9. 9.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
  10. 10.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  11. 11.A town has 4800 people. Its population grows by 5%. How many people live there now?
  12. 12.The price of a school bag changes from ₹800 to ₹600. By what percent did it come down?
  13. 13.A water tank holds 1260 litres. 40% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹2520 to ₹2142. By what percent did it come down?
  15. 15.The price of a school bag changes from ₹4420 to ₹6188. By what percent did it go up?
  16. 16.A water tank holds 3720 litres. 50% of the water is used. How many litres are left?
  17. 17.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  18. 18.A town has 4600 people. Its population grows by 25%. How many people live there now?
  19. 19.A shop sells 760 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  20. 20.A water tank holds 2260 litres. 15% of the water is used. How many litres are left?
  21. 21.A shop sells 140 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  22. 22.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
  23. 23.The price of a bicycle is ₹4620. It goes up by 30%. What is the new price (in ₹)?
  24. 24.The price of a school bag changes from ₹1600 to ₹1200. By what percent did it come down?
  25. 25.The price of a school bag changes from ₹560 to ₹672. By what percent did it go up?
  26. 26.A water tank holds 1160 litres. 30% of the water is used. How many litres are left?
  27. 27.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  28. 28.The price of a school bag changes from ₹1040 to ₹832. By what percent did it come down?
  29. 29.A town has 2820 people. Its population grows by 40%. How many people live there now?
  30. 30.The price of a bicycle is ₹2220. It goes up by 5%. What is the new price (in ₹)?
  31. 31.A water tank holds 260 litres. 30% of the water is used. How many litres are left?
  32. 32.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  33. 33.The price of a school bag changes from ₹3800 to ₹3230. By what percent did it come down?
  34. 34.The price of a school bag changes from ₹3440 to ₹2752. By what percent did it come down?
  35. 35.The price of a school bag changes from ₹1940 to ₹2037. By what percent did it go up?
  36. 36.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  37. 37.The price of a school bag changes from ₹1240 to ₹1116. By what percent did it come down?
  38. 38.The price of a school bag changes from ₹4220 to ₹5486. By what percent did it go up?
  39. 39.The price of a bicycle is ₹1480. It goes up by 40%. What is the new price (in ₹)?
  40. 40.A water tank holds 2840 litres. 5% of the water is used. How many litres are left?

Answer key

  1. 5497
  2. 15
  3. 64
  4. 1900
  5. 50
  6. 20.75
  7. 15
  8. 5
  9. 55
  10. 17
  11. 5040
  12. 25
  13. 756
  14. 15
  15. 40
  16. 1860
  17. 56.25
  18. 5750
  19. 912
  20. 1921
  21. 161
  22. 26
  23. 6006
  24. 25
  25. 20
  26. 812
  27. 23.5
  28. 20
  29. 3948
  30. 2331
  31. 182
  32. 35
  33. 15
  34. 20
  35. 5
  36. 72.5
  37. 10
  38. 30
  39. 2072
  40. 2698

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