Question

gary is making a casserole but only needs 1/3 of the original serving size. if the number of servings gary needs is 4, how many servings did the original recipe make?
what equation will model the situation?
$x/3 = 4$
$x(4) = 3$
$x \times (3) = 4$
$x/4 = 3$
$x/3 = 4$
servings did the original recipe make?

Explanation:

Step1: Define variable for original servings

Let $x$ = original recipe servings.

Step2: Set up equation for 1/3 of $x$

$\frac{x}{3} = 4$

Step3: Solve for $x$

Multiply both sides by 3: $x = 4 \times 3 = 12$

Answer:

Model equation: $\frac{x}{3} = 4$
Original recipe servings: 12