← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 364 · 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 3140 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  2. 2.A town has 4660 people. Its population grows by 5%. How many people live there now?
  3. 3.A town has 2160 people. Its population grows by 50%. How many people live there now?
  4. 4.The price of a school bag changes from ₹960 to ₹672. By what percent did it come down?
  5. 5.A price goes up by 50% and then comes down by 25%. By what percent has it gone up in all? =
  6. 6.A water tank holds 1800 litres. 20% of the water is used. How many litres are left?
  7. 7.A water tank holds 3040 litres. 25% of the water is used. How many litres are left?
  8. 8.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  9. 9.The price of a school bag changes from ₹3540 to ₹3894. By what percent did it go up?
  10. 10.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  11. 11.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
  12. 12.A water tank holds 4880 litres. 5% of the water is used. How many litres are left?
  13. 13.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  14. 14.A shop sells 4800 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  15. 15.The price of a bicycle is ₹1060. It goes up by 10%. What is the new price (in ₹)?
  16. 16.A water tank holds 2560 litres. 20% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹3560 to ₹4272. By what percent did it go up?
  18. 18.The price of a school bag changes from ₹3480 to ₹5220. By what percent did it go up?
  19. 19.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
  20. 20.A water tank holds 4780 litres. 10% of the water is used. How many litres are left?
  21. 21.A water tank holds 4320 litres. 50% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹4060 to ₹4872. By what percent did it go up?
  23. 23.A town has 2100 people. Its population grows by 25%. How many people live there now?
  24. 24.A water tank holds 820 litres. 5% of the water is used. How many litres are left?
  25. 25.A water tank holds 3040 litres. 5% of the water is used. How many litres are left?
  26. 26.A water tank holds 200 litres. 30% of the water is used. How many litres are left?
  27. 27.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  28. 28.A town has 900 people. Its population grows by 20%. How many people live there now?
  29. 29.The price of a school bag changes from ₹1580 to ₹1501. By what percent did it come down?
  30. 30.A water tank holds 80 litres. 20% of the water is used. How many litres are left?
  31. 31.The price of a bicycle is ₹1040. It goes up by 10%. What is the new price (in ₹)?
  32. 32.A water tank holds 80 litres. 10% of the water is used. How many litres are left?
  33. 33.A water tank holds 1600 litres. 50% of the water is used. How many litres are left?
  34. 34.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  35. 35.The price of a school bag changes from ₹2900 to ₹2610. By what percent did it come down?
  36. 36.A shop sells 3900 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  37. 37.The price of a school bag changes from ₹1800 to ₹1080. By what percent did it come down?
  38. 38.The price of a school bag changes from ₹1300 to ₹1430. By what percent did it go up?
  39. 39.A town has 1080 people. Its population grows by 30%. How many people live there now?
  40. 40.A town has 100 people. Its population grows by 50%. How many people live there now?

Answer key

  1. 4082
  2. 4893
  3. 3240
  4. 30
  5. 12.5
  6. 1440
  7. 2280
  8. 23.5
  9. 10
  10. 3.5
  11. 110
  12. 4636
  13. 61
  14. 6720
  15. 1166
  16. 2048
  17. 20
  18. 50
  19. 19
  20. 4302
  21. 2160
  22. 20
  23. 2625
  24. 779
  25. 2888
  26. 140
  27. 20.75
  28. 1080
  29. 5
  30. 64
  31. 1144
  32. 72
  33. 800
  34. 32
  35. 10
  36. 4095
  37. 40
  38. 10
  39. 1404
  40. 150

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