Question 41607
{{{C = (4x + 150) / (5(x + 150))}}}
{{{C = (4(170) + 150) / (5((170) + 150))}}}
{{{C = (680 + 150) / (5*320)}}}
{{{C = (830) / (1600)}}}
{{{C = 83/160 = 0.51875}}} 51.875%