Melissa P. answered 10/16/14
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Effective and Patient Tutor Specializing in Childhood Education
Since this question asks for YOUR profit made as opposed to the general amount of money made, you must first consider:
Item A is sold for $10
You earn $2 for each one that is sold
(This means you make $2/$10, or 20% commission)
So if you sell 50 units of Item A, you must do:
50 x $10= total amount of money made from sales
50 x $2 = total amount of YOUR profit made from sales
50 x 10 = 500
50 x 2 = 100
So, in total sales $500 is made from 50 units being sold -- however only $100 is your profit from these sales.
Another way of solving this or checking your answer:
Since you make 20% of total sales, do $500 - 20% which equals $100