Answer:
$18
Step-by-step explanation:
Let x represent the cost of an adult meal (the value we want to know). The cost of a student meal is half that, or x/2. The total cost of all the meals is ...
60(x/2) +32x = 1116
62x = 1116 . . . . . collect terms
x = 1116/62 = 18 . . . . divide by 62
The cost of an adult meal is $18.
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<em>Additional comment</em>
You can instead use a variable for the cost of a student meal, or you can use variables for both:
a = 2s
32a +60s = 1116
It makes sense here to solve this by eliminating the s variable in any of several ways, since you ultimately want to know the value of 'a'.
