Question 1111359
{{{ c(x) = .21 / ( 1 + x ) }}}
You are given that {{{ c(x) = .1 }}}
( 10% salt )
{{{ .1 = .21 / ( 1 + x ) }}}
{{{ .1*( 1 + x ) = .21 }}}
{{{ 1 + x = 2.1 }}}
{{{ x = 1.1 }}}
1.1 liters of water must be added