Question 1112068
Let {{{ x }}} = liters of water needed
{{{ .95*6 = 5.7 }}} liter of alcohol in mixture
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{{{ 5.7 / ( x + 6 ) = .75 }}}
{{{ 5.7 = .75*( x + 6 ) }}}
{{{ 5.7 = .75x + 4.5 }}}
{{{ .75x = 1.2 }}}
{{{ x = 1.6 }}}
1.6 liters of water needs to be added
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check:
{{{ 5.7 / ( 1.6 + 6 ) = .75 }}}
{{{ 5.7 / 7.6 = .75 }}}
{{{ 5.7 = 5.7 }}}
OK