SOLUTION: At Carol's diner, 2 hamburgers and 3 glasses of milk cost $4.95. At the same diner, 3 hamburgers and 4 glasses of milk cost $7.03. What is the cost of one glass of milk?
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Question 392017: At Carol's diner, 2 hamburgers and 3 glasses of milk cost $4.95. At the same diner, 3 hamburgers and 4 glasses of milk cost $7.03. What is the cost of one glass of milk? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = cost of 1 hamburger
Let = cost of 1 glass of milk
given:
(1) (in cents)
(2)
Multiply both sides of (1) by ,
multiply both sides of (2) by ,
Then subtract (2) from (1)
(1)
(2)
By substitution:
(1)
Hamburgers are $1.29 each and milk is $.79 a glass
check:
(2)
OK
