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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 240 · 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 1000 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  2. 2.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  3. 3.A water tank holds 4580 litres. 30% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹600 to ₹360. By what percent did it come down?
  5. 5.A water tank holds 3480 litres. 15% of the water is used. How many litres are left?
  6. 6.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  7. 7.A price comes down by 30% and then comes down by 50% more. By what percent has it come down in all? =
  8. 8.The price of a school bag changes from ₹4720 to ₹5900. By what percent did it go up?
  9. 9.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
  10. 10.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  11. 11.A shop sells 840 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  12. 12.The price of a school bag changes from ₹360 to ₹504. By what percent did it go up?
  13. 13.The price of a school bag changes from ₹1500 to ₹1650. By what percent did it go up?
  14. 14.The price of a school bag changes from ₹1760 to ₹1848. By what percent did it go up?
  15. 15.The price of a school bag changes from ₹3900 to ₹4485. By what percent did it go up?
  16. 16.The price of a school bag changes from ₹3720 to ₹4464. By what percent did it go up?
  17. 17.The price of a school bag changes from ₹1860 to ₹1674. By what percent did it come down?
  18. 18.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  19. 19.The price of a bicycle is ₹1240. It goes up by 10%. What is the new price (in ₹)?
  20. 20.The price of a school bag changes from ₹2760 to ₹2346. By what percent did it come down?
  21. 21.The price of a school bag changes from ₹2460 to ₹1476. By what percent did it come down?
  22. 22.A water tank holds 2420 litres. 40% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹3420 to ₹3249. By what percent did it come down?
  24. 24.A water tank holds 3800 litres. 30% of the water is used. How many litres are left?
  25. 25.A water tank holds 240 litres. 25% of the water is used. How many litres are left?
  26. 26.A water tank holds 1760 litres. 25% of the water is used. How many litres are left?
  27. 27.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
  28. 28.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  29. 29.The price of a bicycle is ₹3240. It goes up by 5%. What is the new price (in ₹)?
  30. 30.The price of a school bag changes from ₹2000 to ₹2800. By what percent did it go up?
  31. 31.A water tank holds 1140 litres. 10% of the water is used. How many litres are left?
  32. 32.A water tank holds 2440 litres. 25% of the water is used. How many litres are left?
  33. 33.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹3620 to ₹2896. By what percent did it come down?
  35. 35.The price of a school bag changes from ₹2560 to ₹2944. By what percent did it go up?
  36. 36.A shop sells 4780 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  37. 37.A water tank holds 740 litres. 5% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹1240 to ₹744. By what percent did it come down?
  39. 39.A water tank holds 3000 litres. 15% of the water is used. How many litres are left?
  40. 40.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =

Answer key

  1. 1150
  2. 80
  3. 3206
  4. 40
  5. 2958
  6. 19
  7. 65
  8. 25
  9. 110
  10. 50
  11. 1176
  12. 40
  13. 10
  14. 5
  15. 15
  16. 20
  17. 10
  18. 52.5
  19. 1364
  20. 15
  21. 40
  22. 1452
  23. 5
  24. 2660
  25. 180
  26. 1320
  27. 125
  28. 2
  29. 3402
  30. 40
  31. 1026
  32. 1830
  33. 12
  34. 20
  35. 15
  36. 5975
  37. 703
  38. 40
  39. 2550
  40. 38

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