SOLUTION: James sold magazines subscriptions with three prices: $27.00, $11.00 and $12.00. He sold 1 fewer of the $27 subscriptions than of the $11 subscriptions and sold a total of 42 subsc

SOLUTION: James sold magazines subscriptions with three prices: $27.00, $11.00 and $12.00. He sold 1 fewer of the $27 subscriptions than of the $11 subscriptions and sold a total of 42 subsc

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Question 912007: James sold magazines subscriptions with three prices: $27.00, $11.00 and $12.00. He sold 1 fewer of the $27 subscriptions than of the $11 subscriptions and sold a total of 42 subscriptions. If his total sales amounted to $685.00, how many $12 subscriptions did James sell?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
27x+11y+12z=685
x=y-1
x+y+z=42
x = 13, y = 14, z = 15
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