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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 438 · 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 ₹980 to ₹1225. By what percent did it go up?
  2. 2.The price of a school bag changes from ₹2760 to ₹1656. By what percent did it come down?
  3. 3.The price of a school bag changes from ₹3840 to ₹4800. By what percent did it go up?
  4. 4.A shop sells 2180 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  5. 5.The price of a school bag changes from ₹1460 to ₹730. By what percent did it come down?
  6. 6.A water tank holds 4900 litres. 15% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹520 to ₹572. By what percent did it go up?
  8. 8.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  9. 9.A shop sells 440 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  10. 10.The price of a bicycle is ₹4600. It goes up by 5%. What is the new price (in ₹)?
  11. 11.A water tank holds 4600 litres. 25% of the water is used. How many litres are left?
  12. 12.A shop sells 3200 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  13. 13.The price of a school bag changes from ₹3300 to ₹1980. By what percent did it come down?
  14. 14.A water tank holds 1920 litres. 40% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹3720 to ₹2976. By what percent did it come down?
  16. 16.The price of a school bag changes from ₹3860 to ₹5790. By what percent did it go up?
  17. 17.A town has 560 people. Its population grows by 20%. How many people live there now?
  18. 18.A water tank holds 1360 litres. 30% of the water is used. How many litres are left?
  19. 19.A water tank holds 3380 litres. 15% of the water is used. How many litres are left?
  20. 20.A water tank holds 100 litres. 40% of the water is used. How many litres are left?
  21. 21.A shop sells 3140 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  22. 22.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =
  23. 23.The price of a school bag changes from ₹4820 to ₹5302. By what percent did it go up?
  24. 24.A town has 3120 people. Its population grows by 25%. How many people live there now?
  25. 25.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
  26. 26.The price of a bicycle is ₹1380. It goes up by 30%. What is the new price (in ₹)?
  27. 27.The price of a bicycle is ₹840. It goes up by 10%. What is the new price (in ₹)?
  28. 28.A price comes down by 30% and then comes down by 30% more. By what percent has it come down in all? =
  29. 29.A water tank holds 400 litres. 10% of the water is used. How many litres are left?
  30. 30.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
  31. 31.A water tank holds 1420 litres. 10% of the water is used. How many litres are left?
  32. 32.A town has 280 people. Its population grows by 30%. How many people live there now?
  33. 33.The price of a school bag changes from ₹820 to ₹861. By what percent did it go up?
  34. 34.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
  35. 35.The price of a school bag changes from ₹2960 to ₹3848. By what percent did it go up?
  36. 36.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  37. 37.The price of a bicycle is ₹2840. It goes up by 40%. What is the new price (in ₹)?
  38. 38.The price of a school bag changes from ₹3700 to ₹4255. By what percent did it go up?
  39. 39.A shop sells 3760 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  40. 40.A water tank holds 1780 litres. 20% of the water is used. How many litres are left?

Answer key

  1. 25
  2. 40
  3. 25
  4. 2398
  5. 50
  6. 4165
  7. 10
  8. 46
  9. 484
  10. 4830
  11. 3450
  12. 3360
  13. 40
  14. 1152
  15. 20
  16. 50
  17. 672
  18. 952
  19. 2873
  20. 60
  21. 3297
  22. 82
  23. 10
  24. 3900
  25. 26
  26. 1794
  27. 924
  28. 51
  29. 360
  30. 54
  31. 1278
  32. 364
  33. 5
  34. 58
  35. 30
  36. 32.5
  37. 3976
  38. 15
  39. 4324
  40. 1424

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