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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 848 · 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 ₹2260 to ₹1921. By what percent did it come down?
  2. 2.The price of a bicycle is ₹140. It goes up by 20%. What is the new price (in ₹)?
  3. 3.A water tank holds 3440 litres. 50% of the water is used. How many litres are left?
  4. 4.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  5. 5.A shop sells 1960 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  6. 6.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  7. 7.A water tank holds 4860 litres. 25% of the water is used. How many litres are left?
  8. 8.The price of a bicycle is ₹3480. It goes up by 20%. What is the new price (in ₹)?
  9. 9.A water tank holds 3520 litres. 30% of the water is used. How many litres are left?
  10. 10.The price of a bicycle is ₹3300. It goes up by 10%. What is the new price (in ₹)?
  11. 11.The price of a school bag changes from ₹1720 to ₹1634. By what percent did it come down?
  12. 12.The price of a bicycle is ₹2960. It goes up by 25%. What is the new price (in ₹)?
  13. 13.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  14. 14.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
  15. 15.A water tank holds 4340 litres. 25% of the water is used. How many litres are left?
  16. 16.The price of a school bag changes from ₹220 to ₹308. By what percent did it go up?
  17. 17.A shop sells 560 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  18. 18.The price of a school bag changes from ₹260 to ₹325. By what percent did it go up?
  19. 19.A water tank holds 4760 litres. 15% of the water is used. How many litres are left?
  20. 20.The price of a bicycle is ₹1680. It goes up by 10%. What is the new price (in ₹)?
  21. 21.A water tank holds 4440 litres. 10% of the water is used. How many litres are left?
  22. 22.A price comes down by 50% and then comes down by 15% more. By what percent has it come down in all? =
  23. 23.A water tank holds 2340 litres. 30% of the water is used. How many litres are left?
  24. 24.The price of a bicycle is ₹4420. It goes up by 30%. What is the new price (in ₹)?
  25. 25.A water tank holds 2920 litres. 10% of the water is used. How many litres are left?
  26. 26.A town has 2220 people. Its population grows by 40%. How many people live there now?
  27. 27.The price of a bicycle is ₹900. It goes up by 40%. What is the new price (in ₹)?
  28. 28.A price comes down by 10% 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 ₹1760 to ₹1584. By what percent did it come down?
  30. 30.A price goes up by 30% and then comes down by 15%. By what percent has it gone up in all? =
  31. 31.The price of a school bag changes from ₹1280 to ₹1344. By what percent did it go up?
  32. 32.A water tank holds 2360 litres. 10% of the water is used. How many litres are left?
  33. 33.The price of a bicycle is ₹2040. It goes up by 20%. What is the new price (in ₹)?
  34. 34.A water tank holds 1420 litres. 40% of the water is used. How many litres are left?
  35. 35.A shop sells 3120 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  36. 36.The price of a school bag changes from ₹1780 to ₹1958. By what percent did it go up?
  37. 37.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
  38. 38.A town has 4000 people. Its population grows by 30%. How many people live there now?
  39. 39.The price of a bicycle is ₹3780. It goes up by 50%. What is the new price (in ₹)?
  40. 40.A water tank holds 580 litres. 25% of the water is used. How many litres are left?

Answer key

  1. 15
  2. 168
  3. 1720
  4. 52.5
  5. 2058
  6. 72.5
  7. 3645
  8. 4176
  9. 2464
  10. 3630
  11. 5
  12. 3700
  13. 40.5
  14. 49
  15. 3255
  16. 40
  17. 644
  18. 25
  19. 4046
  20. 1848
  21. 3996
  22. 57.5
  23. 1638
  24. 5746
  25. 2628
  26. 3108
  27. 1260
  28. 23.5
  29. 10
  30. 10.5
  31. 5
  32. 2124
  33. 2448
  34. 852
  35. 4368
  36. 10
  37. 14.5
  38. 5200
  39. 5670
  40. 435

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