← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 849 · 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 ₹3260. It goes up by 10%. What is the new price (in ₹)?
  2. 2.A water tank holds 1840 litres. 5% of the water is used. How many litres are left?
  3. 3.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  4. 4.The price of a school bag changes from ₹280 to ₹308. By what percent did it go up?
  5. 5.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  6. 6.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  7. 7.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  8. 8.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  9. 9.A town has 4800 people. Its population grows by 30%. How many people live there now?
  10. 10.The price of a bicycle is ₹4600. It goes up by 40%. What is the new price (in ₹)?
  11. 11.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  12. 12.A water tank holds 1580 litres. 25% of the water is used. How many litres are left?
  13. 13.A shop sells 760 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  14. 14.A water tank holds 3240 litres. 15% of the water is used. How many litres are left?
  15. 15.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  16. 16.A water tank holds 1500 litres. 30% of the water is used. How many litres are left?
  17. 17.The price of a bicycle is ₹320. It goes up by 15%. What is the new price (in ₹)?
  18. 18.The price of a school bag changes from ₹2460 to ₹2706. By what percent did it go up?
  19. 19.The price of a school bag changes from ₹100 to ₹95. By what percent did it come down?
  20. 20.A shop sells 1100 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  21. 21.A town has 4420 people. Its population grows by 40%. How many people live there now?
  22. 22.The price of a school bag changes from ₹1900 to ₹1615. By what percent did it come down?
  23. 23.A water tank holds 2760 litres. 50% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹1400 to ₹1330. By what percent did it come down?
  25. 25.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
  26. 26.The price of a bicycle is ₹240. It goes up by 15%. What is the new price (in ₹)?
  27. 27.A town has 3680 people. Its population grows by 25%. How many people live there now?
  28. 28.A water tank holds 3220 litres. 40% of the water is used. How many litres are left?
  29. 29.The price of a bicycle is ₹760. It goes up by 5%. What is the new price (in ₹)?
  30. 30.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
  31. 31.The price of a school bag changes from ₹3720 to ₹4836. By what percent did it go up?
  32. 32.The price of a bicycle is ₹3200. It goes up by 20%. What is the new price (in ₹)?
  33. 33.A water tank holds 3200 litres. 15% of the water is used. How many litres are left?
  34. 34.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  35. 35.The price of a school bag changes from ₹4820 to ₹6025. By what percent did it go up?
  36. 36.A water tank holds 4680 litres. 25% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹1460 to ₹1022. By what percent did it come down?
  38. 38.A water tank holds 4280 litres. 25% of the water is used. How many litres are left?
  39. 39.A water tank holds 2660 litres. 25% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹1840 to ₹2576. By what percent did it go up?

Answer key

  1. 3586
  2. 1748
  3. 26.5
  4. 10
  5. 26
  6. 43.75
  7. 3.5
  8. 32
  9. 6240
  10. 6440
  11. 58
  12. 1185
  13. 836
  14. 2754
  15. 60
  16. 1050
  17. 368
  18. 10
  19. 5
  20. 1430
  21. 6188
  22. 15
  23. 1380
  24. 5
  25. 70
  26. 276
  27. 4600
  28. 1932
  29. 798
  30. 24
  31. 30
  32. 3840
  33. 2720
  34. 20
  35. 25
  36. 3510
  37. 30
  38. 3210
  39. 1995
  40. 40

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