Algebra 2, Revenue

Question

A farmer bought a number of pigs for $145. However, 4 of them died before he could sell the rest at a profit of $3 per pig. his total profit. Was $55. How many pigs did he originally buy?

Answer 1

Let n be the number of pigs purchased.

Profit = Cost - Revenue

Cost is 145

Revenue is 3(n-4)

Solve for n in 55 = 145 - 3(n-4) = 145 - 3n +12 = 157-3n

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