Question 1028879
{{{ g/b = 2/3 }}}
{{{ g = (2/3)*b }}}
{{{ b / ( g + b ) = b / ( (2/3)*b + b ) }}}
Divide top and bottom by {{{ b }}}
{{{ b / ( g + b ) = 1 / ( 2/3 + 1 ) }}}
{{{ b / ( g + b ) = 1 / (5/3) }}}
{{{ b / ( g + b ) = 3/5 }}}
3/5 of the students are boys