Question 712824
Directly using the values given,


v for gallons of Valentine Pink, m gallons of  MacIntosh Red
{{{(12.5v+20m)/10=17}}}  and {{{v+m=10}}}


12.5v+20m=170
v+m=10 


OR


{{{2.5v+4m=34}}}
{{{v+m=10}}}
Which may be a easier system form to use.
Solve the system for v and m.