SOLUTION: Ken is selling each of the belts he makes for $12.50 each at the craft fair. It costs $4.50 for the material to make 2 belts. How many belts does he have to sell to earn a profit o

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Question 1063656: Ken is selling each of the belts he makes for $12.50 each at the craft fair. It costs $4.50 for the material to make 2 belts. How many belts does he have to sell to earn a profit of at least $150?
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
n, belts to sell

12.5n-%284.5%2F2%29n=150

%2812.5-2.25%29n=150

10.25n=150

n=14.634, but Ken must sell whole number of belts; no part of a belt.
If the cost for two belts could be shared, then n=15. If the cost MUST be $4.5 for TWO belts, then n=16.