Question 988379
In words:
[ Cost of mixture ] = 
[ cost/L of apple ]x[ L of apple ] + [ cost/L of cranberry ]x[ L of cranberry ]
------------------
Let {{{ C }}} = total cost of mixture )
{{{ C = 450*8 + 108*10 }}} ( in cents )
{{{ C = 3600 + 1080 }}}
{{{ C = 4680 }}}
[ Cost/L of mixture ] = [ C ] / [ L of mixture ]
{{{ 4680 / ( 8 + 10 ) = 4680 / 18 }}}
{{{ 4680 / 18 = 260 }}} ( in cents )
The cost/L of the mixture should be $2.60