A batch of widgets costs p + 15 dollars for a company to produce and each batch sells for p(10 – p) dollars. For which of the following values of p does the company make a profit? Choose the correct choice from the following answers:
A) 10
B) 9
C) 8
D) 6
E) 7
to make profit, selling price should be greater than cost price   p(10-p) - p-15 &gt;0   =&gt; p^2-9*p+15&lt;0   hence p=6   6
<result>D</result>
A batch of widgets costs p + 15 dollars for a company to produce and each batch sells for p(10 – p) dollars. For which of the following values of p does the company make a profit?