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you have a barrel with water. after 30 seconds there is 14 gallons left. one minute you have 9 gallons left. determine the time the barrel was empty.

  • Math -

    If after 30 seconds there are 14 gallons left, and after 60 seconds there are 9 gallons left,

    Then you can see that in the 30 second gap, 5 gallons leaked out. So water is emptying at 5 gallons/30 seconds or 1 gallon every 6 seconds.

    Can you use this rate of emptying and the initial number of gallons given to find the time?

  • Math -

    i am getting 35 min and 7 sec. is that right?

  • Math -

    No. How can you get more than a half hour for 9 gallons when 1 gallon is emptied every 6 seconds?

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