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Read the following description of a relationship: $\newline$ Lola's shower uses $16\,\text{liters}$ of water per minute. $\newline$ Let $m$ represent the number of minutes her shower is on and $w$ represent the liters of water used. $\newline$ $\newline$ Find the value of $w$ when $m = 4$ . $\newline$ $w = \_\_$

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Solve word problems by finding two-variable equations

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Q. Read the following description of a relationship:

\newline

Lola's shower uses

16\,\text{liters}

of water per minute.

\newline

Let

m

represent the number of minutes her shower is on and

w

represent the liters of water used.

\newline

\newline

Find the value of

w

when

m = 4

.

\newline

w = \_\_

Establish Relationship: Establish the relationship between the liters of water used and the minutes the shower runs. $\newline$ Lola's shower uses $16$ liters per minute. So, the equation relating liters of water ( $w$ ) to minutes ( $m$ ) is: $\newline$ $w = 16 \times m$
Substitute Value: Substitute the given value of $m$ into the equation. $\newline$ We know $m = 4$ . $\newline$ $w = 16 \times 4$
Calculate Total: Calculate the total liters of water used. $w = 16 \times 4 = 64$

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