Question 921386
Half the number of men take twice as long
(c) 6 days
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let {{{ x }}} = liters of alcohol to be added
{{{  (( 2 + x )) / (( 2 + 28 + x )) = .125 }}}
{{{ (( 2 + x )) / (( 30 + x )) = 1/8 }}}
{{{ 8*( 2 + x ) = 30 + x }}}
{{{ 16 + 8x = 30 + x }}}
{{{ 7x = 14 }}}
{{{ x = 2 }}}
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(a) 2
check:
{{{ ( 2 + x ) / ( 30 + x ) = 1/8 }}}
{{{ ( 2 + 2 ) / ( 30 + 2 ) = 1/8 }}}
{{{ 4 / 32 = 1/8 }}}
{{{ 1/8 = 1/8 }}}
OK