Question 822468
Let {{{ W }}} = the total weight of the sample in ounces
Let {{{ c }}} = the weight of copper in the sample in ounces
given:
{{{ c/W = 1/4 }}}
{{{ c = (1/4)*W }}}
{{{ W = 4c }}}
{{{ W = 4*( 16/3 ) }}}
{{{ W = 64/3 }}}
{{{ W = 21.333 }}}
The total weight of the sample is 21 and 1/3 ounces