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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 386 · 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 price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
  2. 2.A shop sells 260 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  3. 3.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
  4. 4.A shop sells 1380 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  5. 5.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  6. 6.The price of a school bag changes from ₹100 to ₹105. By what percent did it go up?
  7. 7.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  8. 8.A water tank holds 4220 litres. 5% of the water is used. How many litres are left?
  9. 9.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  10. 10.The price of a school bag changes from ₹3480 to ₹2784. By what percent did it come down?
  11. 11.The price of a bicycle is ₹4900. It goes up by 30%. What is the new price (in ₹)?
  12. 12.The price of a bicycle is ₹520. It goes up by 20%. What is the new price (in ₹)?
  13. 13.The price of a school bag changes from ₹4760 to ₹4046. By what percent did it come down?
  14. 14.A town has 2680 people. Its population grows by 25%. How many people live there now?
  15. 15.A water tank holds 160 litres. 25% of the water is used. How many litres are left?
  16. 16.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  17. 17.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  18. 18.A water tank holds 4380 litres. 30% of the water is used. How many litres are left?
  19. 19.The price of a bicycle is ₹1200. It goes up by 15%. What is the new price (in ₹)?
  20. 20.A town has 1960 people. Its population grows by 5%. How many people live there now?
  21. 21.A water tank holds 1000 litres. 40% of the water is used. How many litres are left?
  22. 22.A water tank holds 4300 litres. 20% of the water is used. How many litres are left?
  23. 23.A shop sells 1740 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  24. 24.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  25. 25.A water tank holds 1860 litres. 25% of the water is used. How many litres are left?
  26. 26.A town has 4400 people. Its population grows by 20%. How many people live there now?
  27. 27.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  28. 28.A water tank holds 2600 litres. 15% of the water is used. How many litres are left?
  29. 29.The price of a school bag changes from ₹300 to ₹390. By what percent did it go up?
  30. 30.The price of a school bag changes from ₹5000 to ₹4750. By what percent did it come down?
  31. 31.A water tank holds 3300 litres. 5% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹4740 to ₹5214. By what percent did it go up?
  33. 33.The price of a school bag changes from ₹4300 to ₹3225. By what percent did it come down?
  34. 34.A water tank holds 1860 litres. 30% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹1360 to ₹1700. By what percent did it go up?
  36. 36.A town has 380 people. Its population grows by 10%. How many people live there now?
  37. 37.A water tank holds 4460 litres. 5% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹480 to ₹528. By what percent did it go up?
  39. 39.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  40. 40.A water tank holds 2840 litres. 20% of the water is used. How many litres are left?

Answer key

  1. 28.75
  2. 325
  3. 57.5
  4. 2070
  5. 72.5
  6. 5
  7. 36.5
  8. 4009
  9. 38
  10. 20
  11. 6370
  12. 624
  13. 15
  14. 3350
  15. 120
  16. 37
  17. 52
  18. 3066
  19. 1380
  20. 2058
  21. 600
  22. 3440
  23. 1914
  24. 14.5
  25. 1395
  26. 5280
  27. 20.75
  28. 2210
  29. 30
  30. 5
  31. 3135
  32. 10
  33. 25
  34. 1302
  35. 25
  36. 418
  37. 4237
  38. 10
  39. 23.5
  40. 2272

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