← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 939 · 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 1860 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  2. 2.A shop sells 3880 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  3. 3.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
  4. 4.The price of a bicycle is ₹1680. It goes up by 20%. What is the new price (in ₹)?
  5. 5.A town has 3600 people. Its population grows by 10%. How many people live there now?
  6. 6.A shop sells 640 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  7. 7.A price goes up by 30% and then goes up by 10% more. 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 water tank holds 940 litres. 50% of the water is used. How many litres are left?
  10. 10.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  11. 11.A town has 1320 people. Its population grows by 5%. How many people live there now?
  12. 12.The price of a school bag changes from ₹2260 to ₹1356. By what percent did it come down?
  13. 13.The price of a school bag changes from ₹4080 to ₹2856. By what percent did it come down?
  14. 14.A water tank holds 2220 litres. 30% of the water is used. How many litres are left?
  15. 15.A water tank holds 1140 litres. 10% of the water is used. How many litres are left?
  16. 16.A water tank holds 3140 litres. 20% of the water is used. How many litres are left?
  17. 17.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  18. 18.The price of a school bag changes from ₹2360 to ₹2596. By what percent did it go up?
  19. 19.The price of a school bag changes from ₹3700 to ₹4255. By what percent did it go up?
  20. 20.A water tank holds 3620 litres. 30% of the water is used. How many litres are left?
  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.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  23. 23.A water tank holds 1480 litres. 15% of the water is used. How many litres are left?
  24. 24.The price of a bicycle is ₹3480. It goes up by 15%. What is the new price (in ₹)?
  25. 25.A water tank holds 2840 litres. 40% of the water is used. How many litres are left?
  26. 26.The price of a school bag changes from ₹880 to ₹836. By what percent did it come down?
  27. 27.A water tank holds 4420 litres. 10% of the water is used. How many litres are left?
  28. 28.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  29. 29.The price of a school bag changes from ₹3260 to ₹2608. By what percent did it come down?
  30. 30.A water tank holds 4500 litres. 50% of the water is used. How many litres are left?
  31. 31.A water tank holds 1660 litres. 15% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹1720 to ₹2150. By what percent did it go up?
  33. 33.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  34. 34.The price of a bicycle is ₹1920. It goes up by 15%. What is the new price (in ₹)?
  35. 35.The price of a school bag changes from ₹4180 to ₹3971. By what percent did it come down?
  36. 36.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  37. 37.The price of a school bag changes from ₹580 to ₹638. By what percent did it go up?
  38. 38.The price of a bicycle is ₹680. It goes up by 40%. What is the new price (in ₹)?
  39. 39.The price of a bicycle is ₹3300. It goes up by 30%. What is the new price (in ₹)?
  40. 40.A town has 600 people. Its population grows by 40%. How many people live there now?

Answer key

  1. 2046
  2. 5432
  3. 26
  4. 2016
  5. 3960
  6. 832
  7. 43
  8. 32
  9. 470
  10. 33.5
  11. 1386
  12. 40
  13. 30
  14. 1554
  15. 1026
  16. 2512
  17. 4.5
  18. 10
  19. 15
  20. 2534
  21. 64
  22. 23.5
  23. 1258
  24. 4002
  25. 1704
  26. 5
  27. 3978
  28. 27.75
  29. 20
  30. 2250
  31. 1411
  32. 25
  33. 57.5
  34. 2208
  35. 5
  36. 36.5
  37. 10
  38. 952
  39. 4290
  40. 840

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