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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 889 · 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 480 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  2. 2.A town has 2440 people. Its population grows by 25%. How many people live there now?
  3. 3.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =
  4. 4.The price of a bicycle is ₹60. It goes up by 40%. What is the new price (in ₹)?
  5. 5.A water tank holds 1780 litres. 40% of the water is used. How many litres are left?
  6. 6.The price of a bicycle is ₹1920. It goes up by 10%. What is the new price (in ₹)?
  7. 7.A water tank holds 3060 litres. 30% of the water is used. How many litres are left?
  8. 8.The price of a bicycle is ₹2080. It goes up by 50%. What is the new price (in ₹)?
  9. 9.The price of a bicycle is ₹180. It goes up by 40%. What is the new price (in ₹)?
  10. 10.A price comes down by 25% and then comes down by 25% more. By what percent has it come down in all? =
  11. 11.A town has 4140 people. Its population grows by 50%. How many people live there now?
  12. 12.A water tank holds 3220 litres. 5% of the water is used. How many litres are left?
  13. 13.The price of a school bag changes from ₹4700 to ₹2820. By what percent did it come down?
  14. 14.A water tank holds 3360 litres. 25% of the water is used. How many litres are left?
  15. 15.A shop sells 2860 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  16. 16.The price of a school bag changes from ₹1260 to ₹1008. By what percent did it come down?
  17. 17.The price of a school bag changes from ₹1360 to ₹1088. By what percent did it come down?
  18. 18.A water tank holds 4860 litres. 5% of the water is used. How many litres are left?
  19. 19.A water tank holds 4280 litres. 5% of the water is used. How many litres are left?
  20. 20.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
  21. 21.A water tank holds 620 litres. 50% of the water is used. How many litres are left?
  22. 22.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  23. 23.A shop sells 800 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  24. 24.A shop sells 440 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  25. 25.A water tank holds 4180 litres. 40% of the water is used. How many litres are left?
  26. 26.The price of a school bag changes from ₹2860 to ₹3146. By what percent did it go up?
  27. 27.A price goes up by 20% and then goes up by 25% more. By what percent has it gone up in all? =
  28. 28.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  29. 29.A water tank holds 4060 litres. 5% of the water is used. How many litres are left?
  30. 30.A water tank holds 4860 litres. 25% of the water is used. How many litres are left?
  31. 31.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  32. 32.The price of a bicycle is ₹800. It goes up by 10%. What is the new price (in ₹)?
  33. 33.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
  34. 34.A water tank holds 4860 litres. 20% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹460 to ₹690. By what percent did it go up?
  36. 36.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  37. 37.A town has 3200 people. Its population grows by 10%. How many people live there now?
  38. 38.A water tank holds 3200 litres. 25% of the water is used. How many litres are left?
  39. 39.The price of a school bag changes from ₹4160 to ₹5408. By what percent did it go up?
  40. 40.A town has 1320 people. Its population grows by 15%. How many people live there now?

Answer key

  1. 576
  2. 3050
  3. 55
  4. 84
  5. 1068
  6. 2112
  7. 2142
  8. 3120
  9. 252
  10. 43.75
  11. 6210
  12. 3059
  13. 40
  14. 2520
  15. 4290
  16. 20
  17. 20
  18. 4617
  19. 4066
  20. 57.5
  21. 310
  22. 31.25
  23. 920
  24. 660
  25. 2508
  26. 10
  27. 50
  28. 56.25
  29. 3857
  30. 3645
  31. 19
  32. 880
  33. 62.5
  34. 3888
  35. 50
  36. 55
  37. 3520
  38. 2400
  39. 30
  40. 1518

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