Question

ben orders a case of his favorite macaroni and cheese. the case contains 18 same - size boxes that weigh a total of 7.2 pounds. which set of equations represents the weight, in pounds, of each box of macaroni and cheese, x?
7.2x = 18
x = 0.4
7.2x = 18
x = 2.5
18x = 7.2
x = 0.4
18x = 7.2
x = 2.5

Explanation:

Step1: Define equation for total weight

Total weight = number of boxes × weight per box, so $18x = 7.2$

Step2: Solve for x

Divide both sides by 18: $x = \frac{7.2}{18}$

Step3: Calculate x value

$x = 0.4$

Answer:

$18x = 7.2$
$x = 0.4$