Question 843966
Let {{{ x }}} = pounds of sugar to be added
{{{ ( 3 + x ) / ( 21 + x ) = .27 }}}
{{{ 3 + x = .27*( 21 + x ) }}}
{{{ 3 + x = 5.67 + .27x }}}
{{{ .73x = 2.67 }}}
{{{ x = 3.658 }}}
(C) 3.6 is the closest answer