Word problem help! don't get it!
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Word problem help! don't get it!

[From: ] [author: ] [Date: 11-12-21] [Hit: ]
their ratios are equal.18/12.......
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 18 minutes requires 12.6 gallons of water. Find the amount of water used in a shower lasting 10 minutes.

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Since it is direct proportion, their ratios are equal.

18/12.6 = 10/x

you could use cancellation (numerator by numerator and denominator by denominator to simplify the solution)

18x = 126

x = 7 gallons
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