← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 602 · 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 water tank holds 2160 litres. 20% of the water is used. How many litres are left?
  2. 2.A water tank holds 4980 litres. 40% of the water is used. How many litres are left?
  3. 3.A water tank holds 1160 litres. 15% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹320 to ₹448. By what percent did it go up?
  5. 5.A water tank holds 240 litres. 10% of the water is used. How many litres are left?
  6. 6.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  7. 7.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
  8. 8.The price of a bicycle is ₹3860. It goes up by 5%. What is the new price (in ₹)?
  9. 9.A shop sells 4940 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  10. 10.The price of a bicycle is ₹4500. It goes up by 5%. What is the new price (in ₹)?
  11. 11.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  12. 12.A shop sells 180 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  13. 13.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  14. 14.The price of a bicycle is ₹980. It goes up by 20%. What is the new price (in ₹)?
  15. 15.The price of a school bag changes from ₹2780 to ₹3614. By what percent did it go up?
  16. 16.The price of a bicycle is ₹660. It goes up by 50%. What is the new price (in ₹)?
  17. 17.A water tank holds 1960 litres. 50% of the water is used. How many litres are left?
  18. 18.A shop sells 820 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 ₹120. It goes up by 25%. What is the new price (in ₹)?
  20. 20.A town has 1360 people. Its population grows by 10%. How many people live there now?
  21. 21.The price of a school bag changes from ₹1860 to ₹1767. By what percent did it come down?
  22. 22.The price of a school bag changes from ₹4660 to ₹5359. By what percent did it go up?
  23. 23.A water tank holds 4880 litres. 15% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹980 to ₹931. By what percent did it come down?
  25. 25.The price of a bicycle is ₹2500. It goes up by 15%. What is the new price (in ₹)?
  26. 26.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  27. 27.A water tank holds 1140 litres. 25% of the water is used. How many litres are left?
  28. 28.A water tank holds 4740 litres. 5% of the water is used. How many litres are left?
  29. 29.The price of a school bag changes from ₹3800 to ₹2280. By what percent did it come down?
  30. 30.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  31. 31.A water tank holds 4880 litres. 5% of the water is used. How many litres are left?
  32. 32.A town has 1060 people. Its population grows by 10%. How many people live there now?
  33. 33.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹1820 to ₹2002. By what percent did it go up?
  35. 35.A water tank holds 3500 litres. 25% of the water is used. How many litres are left?
  36. 36.The price of a school bag changes from ₹1440 to ₹1224. By what percent did it come down?
  37. 37.A water tank holds 2760 litres. 25% of the water is used. How many litres are left?
  38. 38.The price of a bicycle is ₹1300. It goes up by 5%. What is the new price (in ₹)?
  39. 39.The price of a bicycle is ₹220. It goes up by 5%. What is the new price (in ₹)?
  40. 40.The price of a school bag changes from ₹1860 to ₹2139. By what percent did it go up?

Answer key

  1. 1728
  2. 2988
  3. 986
  4. 40
  5. 216
  6. 4
  7. 42.5
  8. 4053
  9. 6422
  10. 4725
  11. 20.75
  12. 234
  13. 87.5
  14. 1176
  15. 30
  16. 990
  17. 980
  18. 1148
  19. 150
  20. 1496
  21. 5
  22. 15
  23. 4148
  24. 5
  25. 2875
  26. 57.5
  27. 855
  28. 4503
  29. 40
  30. 82
  31. 4636
  32. 1166
  33. 49.5
  34. 10
  35. 2625
  36. 15
  37. 2070
  38. 1365
  39. 231
  40. 15

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