SOLUTION: A baker is making fudge and his recipe calls for thirty 75% cocoa chocolate squares. He looks in his cupboard to discover he only has 60% cocoa and 85% cocoa. How many of each sho

Question 843740: A baker is making fudge and his recipe calls for thirty 75% cocoa chocolate squares. He looks in his cupboard to discover he only has 60% cocoa and 85% cocoa. How many of each should he use to make his fudge?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
You have enough 60% fudge to make squares
You have enough 85% fudge to make squares
(1)
(2)
-----------------------------
(2)
(2)
(2)
Multiply both sides of (1) by
and subtract (1) from (2)
(2)
(1)

and
(1)
(1)
(1)
He needs enough of the 60% cocoa for 12 squares
He needs enough of the 85% cocoa for 18 squares
check:
(2)
(2)
(2)
(2)
(2)
OK

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