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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 679 · 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 town has 3720 people. Its population grows by 30%. How many people live there now?
  2. 2.The price of a bicycle is ₹3980. It goes up by 50%. What is the new price (in ₹)?
  3. 3.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  4. 4.A water tank holds 1820 litres. 10% of the water is used. How many litres are left?
  5. 5.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  6. 6.A shop sells 3980 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  7. 7.A water tank holds 4620 litres. 5% of the water is used. How many litres are left?
  8. 8.A water tank holds 1400 litres. 15% of the water is used. How many litres are left?
  9. 9.The price of a school bag changes from ₹560 to ₹448. By what percent did it come down?
  10. 10.A water tank holds 4980 litres. 30% of the water is used. How many litres are left?
  11. 11.The price of a bicycle is ₹940. It goes up by 40%. What is the new price (in ₹)?
  12. 12.A water tank holds 4240 litres. 30% of the water is used. How many litres are left?
  13. 13.A water tank holds 460 litres. 10% of the water is used. How many litres are left?
  14. 14.A water tank holds 1980 litres. 10% of the water is used. How many litres are left?
  15. 15.A water tank holds 1340 litres. 10% of the water is used. How many litres are left?
  16. 16.A town has 4680 people. Its population grows by 30%. How many people live there now?
  17. 17.A shop sells 4140 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  18. 18.The price of a school bag changes from ₹320 to ₹480. By what percent did it go up?
  19. 19.A price goes up by 30% and then goes up by 20% more. By what percent has it gone up in all? =
  20. 20.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  21. 21.A water tank holds 440 litres. 15% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹880 to ₹1012. By what percent did it go up?
  23. 23.The price of a school bag changes from ₹3760 to ₹3196. By what percent did it come down?
  24. 24.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
  25. 25.A town has 3440 people. Its population grows by 15%. How many people live there now?
  26. 26.A town has 3840 people. Its population grows by 25%. How many people live there now?
  27. 27.A shop sells 2240 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  28. 28.A water tank holds 3880 litres. 5% of the water is used. How many litres are left?
  29. 29.A water tank holds 2000 litres. 50% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹1600 to ₹1840. By what percent did it go up?
  31. 31.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
  32. 32.The price of a school bag changes from ₹3180 to ₹3975. By what percent did it go up?
  33. 33.The price of a school bag changes from ₹260 to ₹247. By what percent did it come down?
  34. 34.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  35. 35.The price of a school bag changes from ₹1280 to ₹1472. By what percent did it go up?
  36. 36.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  37. 37.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  38. 38.The price of a bicycle is ₹4400. It goes up by 25%. What is the new price (in ₹)?
  39. 39.A water tank holds 1240 litres. 40% of the water is used. How many litres are left?
  40. 40.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =

Answer key

  1. 4836
  2. 5970
  3. 19.25
  4. 1638
  5. 46
  6. 4776
  7. 4389
  8. 1190
  9. 20
  10. 3486
  11. 1316
  12. 2968
  13. 414
  14. 1782
  15. 1206
  16. 6084
  17. 5796
  18. 50
  19. 56
  20. 33
  21. 374
  22. 15
  23. 15
  24. 65
  25. 3956
  26. 4800
  27. 2912
  28. 3686
  29. 1000
  30. 15
  31. 44
  32. 25
  33. 5
  34. 35
  35. 15
  36. 23.5
  37. 43.75
  38. 5500
  39. 744
  40. 58

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