Problema Solution

trendy t-shits has decided to manufacture a new design. It will cost $400 plus $3 per shirt to produce them, and trendy plans to spend $5000 on advertising. The shirts will sell for $12 each

Answer provided by our tutors

The problem statement is ambiguous but we assume you are asking a question like "how many shirts must be sold in order to come out even?"

Let 'x' represent the number of t-shirts which are sold. 

The total cost would be 5000+400+3x and Trendy wants to recoup the money by selling '12x':

12x=5000+400+3x

click here to solve for x

x=600

So Trendy must sell at least 600 shirts in order to recoup the invested money.