SOLUTION: If 5 pounds of sugar and 8 pounds of coffee cost $50.64, and at the same price 9 pounds of sugar and 12 pounds of coffee cost $76.80, how much per pound does the sugar cost? The co

Question 1111426: If 5 pounds of sugar and 8 pounds of coffee cost $50.64, and at the same price 9 pounds of sugar and 12 pounds of coffee cost $76.80, how much per pound does the sugar cost? The coffee?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = cost/pound of coffee
Let = cost/pound of sugar
-----------------------------------
(1)
(2)
----------------------------------
(1)
Multiply both sides by
(1)
and
(2)
Multiply both sides of (2) by
and subtract (1) from (2)
(2)
(1)
-----------------------------------

and
(1)
(1)
(1)
(1)
(1)
Coffee is $5.98/pound
Sugar is $.56/pound
------------------------------
check:
(1)
(1)
(1)
(1)
OK
You can check (2)

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