Question 202167
Good up thru about half way
{{{900/(x-5) - 900/x = 2}}} difference is $2
{{{900x - 900(x-5) = 2*(x)*(x-5)}}}
{{{4500 = 2(x^2-5x)}}}
{{{0 = x^2 - 5x - 2250}}}
{{{0 = (x-50)(x+45)}}}
Since the cost ,x, must be positive, the only answer option is x=50
Verify your answer, is 900/50 2 dollars less than 900/45???