Question 476963
Let {{{x}}} = number of kilograms of coffee powder sold
(a)
{{{ C = 2.5x + 30 }}}
{{{ R = 3x  }}}
(b)
The breakeven point is where 
{{{ C = R }}}
{{{ 2.5x + 30 = 3x }}}
{{{ .5x = 30 }}}
{{{ x = 60 }}} kg of coffee powder sold