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Suppose 1.5 liters of water come out of a faucet each minute. For how many minutes was the faucet on if 18.6 liters of water came out?

1 Answer

Jun 21, 2017

$12.4$ $12.4$ minutes

Explanation:

Define your variables.
$x =$ $x=$ minutes
$y =$ $y=$ liters of water

Set up an equation.
For every $x$ $x$ minutes, $y$ $y$ liters of water will come out.
$y = 1.5 x$ $y=1.5x$

Substitute $y$ $y$ for $18.6$ $18.6$ to solve for $x$ $x$ , the number of minutes.
$18.6 = 1.5 x$ $18.6=1.5x$
$x = 12.4$ $x=12.4$

Answer: The faucet was on for $12.4$ $12.4$ minutes.

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