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Francesca's Auto Wash had revenues of $\$15$ from $3$ customers. After serving $4$ customers, how much revenue will Francesca's Auto Wash have? Assume the relationship is directly proportional. $\newline$ $\$$ _____

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Solve proportions: word problems

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Q. Francesca's Auto Wash had revenues of

\$15

from

3

customers. After serving

4

customers, how much revenue will Francesca's Auto Wash have? Assume the relationship is directly proportional.

\newline

\$

_____

Identify Total Revenue: Step $1$ : Identify the total revenue from $3$ customers and set up the proportion for $4$ customers. $\newline$ - Known: $\$15$ from $3$ customers. $\newline$ - Unknown: Revenue from $4$ customers, let's call it $x$ . $\newline$ - Set up the proportion: $\$15 / 3 = x / 4$
Set Up Proportion: Step $2$ : Cross-multiply to find the equation. $\newline$ - Cross-multiplying gives: $15 \times 4 = 3 \times x$ $\newline$ - Equation: $60 = 3x$
Cross-Multiply: Step $3$ : Solve for $x$ . $\newline$ - Divide both sides by $3$ : $\frac{60}{3} = x$ $\newline$ - Simplified: $20 = x$

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