Question 1015063
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A culinary club earns $1116 from a dinner service. They sold 32 adult meals and 60 student meals. An adult meal costs twice as much as a student meal.

What is the cost of an adult meal?
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Solve this system of equations

32*a + 60*s = 1116,
a = 2s.

For it, substitute (2) into (1). You will get

32*a + 30*a = 1116,   or

62*a = 1116,   or

a = {{{1116/62}}} = 18.

Hence s = 9.

<U>Answer</U>. Adult's meal costs 18. Student's meal costs 9.
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