Problema Solution
37 people attended a dinner party and ordered one of 2 entrees. The first entree cost $15 and the second one cost $18. The total cost of the dinners was $606. How many $15 dinners were ordered? How many $18 dinners were ordered?
Answer provided by our tutors
Let 'x' represent the number of $15 dinners and 'y' the number of $18 dinners.
x + y = 37
15x + 18y = 606
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click here to see the system of equations solved for x and y
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x = 20 $15 dinners
y = 17 $18 dinners
There were 20 $15 dinners and 17 $18 dinners.