Farmer's Best Deal

A farmer invested $100.00 in 100 head of livestock, consisting of calves, goats and pigs. The price of each is as follows: calves, $10.00 a piece; goats, $1.00 a piece; and pigs, \(12 \dfrac{1}{2}\) cents a piece. How many of each did he buy?

Soulé's Philosophic Practical Mathematics, George Soulé, 1905

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