← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 528 · 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 comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  2. 2.A water tank holds 3980 litres. 25% of the water is used. How many litres are left?
  3. 3.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
  4. 4.A town has 4140 people. Its population grows by 50%. How many people live there now?
  5. 5.The price of a school bag changes from ₹2680 to ₹3350. By what percent did it go up?
  6. 6.The price of a school bag changes from ₹2460 to ₹2583. By what percent did it go up?
  7. 7.A water tank holds 4540 litres. 15% of the water is used. How many litres are left?
  8. 8.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
  9. 9.A town has 2580 people. Its population grows by 20%. How many people live there now?
  10. 10.A shop sells 1780 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  11. 11.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  12. 12.The price of a school bag changes from ₹4040 to ₹2424. By what percent did it come down?
  13. 13.The price of a school bag changes from ₹3500 to ₹3850. By what percent did it go up?
  14. 14.The price of a school bag changes from ₹4540 to ₹5448. By what percent did it go up?
  15. 15.The price of a school bag changes from ₹3480 to ₹4002. By what percent did it go up?
  16. 16.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
  17. 17.A water tank holds 980 litres. 50% of the water is used. How many litres are left?
  18. 18.A shop sells 1380 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  19. 19.A shop sells 3740 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  20. 20.A shop sells 3860 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  21. 21.A price comes down by 40% and then comes down by 40% more. By what percent has it come down in all? =
  22. 22.The price of a bicycle is ₹800. It goes up by 20%. What is the new price (in ₹)?
  23. 23.The price of a school bag changes from ₹3660 to ₹2196. By what percent did it come down?
  24. 24.The price of a school bag changes from ₹4460 to ₹3345. By what percent did it come down?
  25. 25.The price of a school bag changes from ₹2220 to ₹1776. By what percent did it come down?
  26. 26.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
  27. 27.A water tank holds 920 litres. 40% of the water is used. How many litres are left?
  28. 28.The price of a school bag changes from ₹260 to ₹221. By what percent did it come down?
  29. 29.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  30. 30.A shop sells 4740 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  31. 31.The price of a school bag changes from ₹2300 to ₹2645. By what percent did it go up?
  32. 32.A water tank holds 2760 litres. 15% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹3800 to ₹3610. By what percent did it come down?
  34. 34.A water tank holds 4920 litres. 5% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹4840 to ₹6292. By what percent did it go up?
  36. 36.The price of a bicycle is ₹580. It goes up by 20%. What is the new price (in ₹)?
  37. 37.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  38. 38.A water tank holds 760 litres. 40% of the water is used. How many litres are left?
  39. 39.The price of a bicycle is ₹4340. It goes up by 20%. What is the new price (in ₹)?
  40. 40.A town has 3880 people. Its population grows by 40%. How many people live there now?

Answer key

  1. 23.5
  2. 2985
  3. 65
  4. 6210
  5. 25
  6. 5
  7. 3859
  8. 33.5
  9. 3096
  10. 2047
  11. 36.25
  12. 40
  13. 10
  14. 20
  15. 15
  16. 62.5
  17. 490
  18. 1587
  19. 4114
  20. 4246
  21. 64
  22. 960
  23. 40
  24. 25
  25. 20
  26. 26
  27. 552
  28. 15
  29. 46
  30. 5925
  31. 15
  32. 2346
  33. 5
  34. 4674
  35. 30
  36. 696
  37. 55
  38. 456
  39. 5208
  40. 5432

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