SOLUTION: 4 Cheeseburgers and two shakes cost a total of 7.90. Two shakes cost 15 cents more than one cheeseburger. How much is a cheeseburger and the shake?
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Question 268267: 4 Cheeseburgers and two shakes cost a total of 7.90. Two shakes cost 15 cents more than one cheeseburger. How much is a cheeseburger and the shake?
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
4c + 2s = 7.90
2s = c + .15
substituting ___ 4c + (c + .15) = 7.90 ___ 5c = 7.75 ___ c = 1.55
2s = (1.55) + .15 ___ s = .85
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