← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 414 · 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 school bag changes from ₹1380 to ₹1449. By what percent did it go up?
  2. 2.A water tank holds 3600 litres. 40% of the water is used. How many litres are left?
  3. 3.The price of a school bag changes from ₹4940 to ₹6175. By what percent did it go up?
  4. 4.A shop sells 2600 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  5. 5.A water tank holds 3480 litres. 50% of the water is used. How many litres are left?
  6. 6.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
  7. 7.A shop sells 3500 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  8. 8.A water tank holds 600 litres. 5% of the water is used. How many litres are left?
  9. 9.The price of a school bag changes from ₹4880 to ₹6100. By what percent did it go up?
  10. 10.A water tank holds 2640 litres. 30% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹2500 to ₹2875. By what percent did it go up?
  12. 12.A water tank holds 120 litres. 20% of the water is used. How many litres are left?
  13. 13.A shop sells 580 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  14. 14.A town has 2960 people. Its population grows by 40%. How many people live there now?
  15. 15.The price of a school bag changes from ₹4680 to ₹3276. By what percent did it come down?
  16. 16.A water tank holds 1180 litres. 5% of the water is used. How many litres are left?
  17. 17.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  18. 18.The price of a school bag changes from ₹1520 to ₹1824. By what percent did it go up?
  19. 19.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  20. 20.A water tank holds 3880 litres. 15% of the water is used. How many litres are left?
  21. 21.A price comes down by 50% and then comes down by 15% more. By what percent has it come down in all? =
  22. 22.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  23. 23.A price goes up by 30% and then goes up by 20% more. By what percent has it gone up in all? =
  24. 24.The price of a school bag changes from ₹2180 to ₹3052. By what percent did it go up?
  25. 25.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  26. 26.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  27. 27.A price comes down by 20% and then comes down by 15% more. By what percent has it come down in all? =
  28. 28.A shop sells 900 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  29. 29.The price of a school bag changes from ₹220 to ₹286. By what percent did it go up?
  30. 30.A town has 1380 people. Its population grows by 40%. How many people live there now?
  31. 31.A shop sells 3040 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  32. 32.The price of a school bag changes from ₹220 to ₹253. By what percent did it go up?
  33. 33.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹880 to ₹440. By what percent did it come down?
  35. 35.The price of a school bag changes from ₹200 to ₹250. By what percent did it go up?
  36. 36.A town has 1320 people. Its population grows by 40%. How many people live there now?
  37. 37.The price of a bicycle is ₹2360. It goes up by 40%. What is the new price (in ₹)?
  38. 38.A shop sells 2560 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  39. 39.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
  40. 40.The price of a school bag changes from ₹3340 to ₹2004. By what percent did it come down?

Answer key

  1. 5
  2. 2160
  3. 25
  4. 3640
  5. 1740
  6. 38
  7. 4025
  8. 570
  9. 25
  10. 1848
  11. 15
  12. 96
  13. 725
  14. 4144
  15. 30
  16. 1121
  17. 36.5
  18. 20
  19. 95
  20. 3298
  21. 57.5
  22. 50
  23. 56
  24. 40
  25. 43.75
  26. 61
  27. 32
  28. 945
  29. 30
  30. 1932
  31. 4256
  32. 15
  33. 43
  34. 50
  35. 25
  36. 1848
  37. 3304
  38. 3840
  39. 28.75
  40. 40

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