Homework Help: problem solving

Posted by Jam on Sunday, February 20, 2011 at 4:28pm.

The amount of water used to take a shower is directly proportional to the amount of time that the shower is in use. A shower lasting 21 minutes requires 12.6 gallons of water. Find the amount of water used for a shower lasting 10 minutes.

problem solving - Ms. Sue, Sunday, February 20, 2011 at 4:50pm
Cross multiply and solve for x.

21/12.6 = 10/x

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