Question 281178
{{{TotalCost = FC + (V x Q)}}}
{{{TotalCost -FC = (V x Q)}}}
{{{(TotalCost -FC)/V =  Q}}}
{{{(TotalCost-250000)/500 = Q}}}

Without a value for TotalCost you cannot solve explicitly for Q
Instead you will have a plot that you can see here --> http://www.wolframalpha.com/input/?i=%28x-250%2C000%29%2F500