Cesar R. answered 02/22/17
Tutor
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Mechanical Engineering Tutor
You sell them at $1.50
They cost you $0.80
Therefore, the profit you make is the difference between the price which you sell them at, and the cost to you
Profit for one is: P = (1.50 - 0.80) = 0.70
Profit for two is: P = (1.50 - 0.80)*2 = 1.40
Profit for three: P = (1.50 - 0.80)*3 = 2.10 ...you see where this is going.
To solve for X amount sold, you will have:
Profit = (1.50 - 0.80)*X