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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 787 · 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 goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
  2. 2.The price of a school bag changes from ₹2420 to ₹2057. By what percent did it come down?
  3. 3.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
  4. 4.The price of a school bag changes from ₹240 to ₹288. By what percent did it go up?
  5. 5.A water tank holds 3180 litres. 15% of the water is used. How many litres are left?
  6. 6.A shop sells 940 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  7. 7.The price of a bicycle is ₹4160. It goes up by 15%. What is the new price (in ₹)?
  8. 8.A shop sells 80 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  9. 9.A water tank holds 2460 litres. 40% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹2920 to ₹1752. By what percent did it come down?
  11. 11.A water tank holds 4060 litres. 5% of the water is used. How many litres are left?
  12. 12.A town has 640 people. Its population grows by 50%. How many people live there now?
  13. 13.A water tank holds 3520 litres. 30% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹4300 to ₹4945. By what percent did it go up?
  15. 15.A water tank holds 4580 litres. 30% of the water is used. How many litres are left?
  16. 16.A water tank holds 2700 litres. 20% of the water is used. How many litres are left?
  17. 17.A water tank holds 320 litres. 10% of the water is used. How many litres are left?
  18. 18.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
  19. 19.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
  20. 20.A shop sells 3560 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  21. 21.A shop sells 2900 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  22. 22.A town has 1640 people. Its population grows by 25%. How many people live there now?
  23. 23.A water tank holds 2660 litres. 15% of the water is used. How many litres are left?
  24. 24.The price of a bicycle is ₹4860. It goes up by 40%. What is the new price (in ₹)?
  25. 25.A water tank holds 2540 litres. 40% of the water is used. How many litres are left?
  26. 26.The price of a school bag changes from ₹3740 to ₹2992. By what percent did it come down?
  27. 27.The price of a bicycle is ₹2760. It goes up by 5%. What is the new price (in ₹)?
  28. 28.A town has 4440 people. Its population grows by 25%. How many people live there now?
  29. 29.The price of a school bag changes from ₹1240 to ₹1736. By what percent did it go up?
  30. 30.A water tank holds 2960 litres. 20% of the water is used. How many litres are left?
  31. 31.The price of a school bag changes from ₹2020 to ₹1212. By what percent did it come down?
  32. 32.The price of a school bag changes from ₹5000 to ₹5750. By what percent did it go up?
  33. 33.The price of a school bag changes from ₹180 to ₹189. By what percent did it go up?
  34. 34.The price of a school bag changes from ₹4340 to ₹5208. By what percent did it go up?
  35. 35.The price of a school bag changes from ₹320 to ₹352. By what percent did it go up?
  36. 36.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
  37. 37.A water tank holds 2560 litres. 15% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹1740 to ₹2610. By what percent did it go up?
  39. 39.A shop sells 3880 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  40. 40.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =

Answer key

  1. 32
  2. 15
  3. 62.5
  4. 20
  5. 2703
  6. 1222
  7. 4784
  8. 84
  9. 1476
  10. 40
  11. 3857
  12. 960
  13. 2464
  14. 15
  15. 3206
  16. 2160
  17. 288
  18. 110
  19. 62.5
  20. 3916
  21. 4060
  22. 2050
  23. 2261
  24. 6804
  25. 1524
  26. 20
  27. 2898
  28. 5550
  29. 40
  30. 2368
  31. 40
  32. 15
  33. 5
  34. 20
  35. 10
  36. 14.5
  37. 2176
  38. 50
  39. 5820
  40. 58

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