Question 717756
Price for peanuts, 3.00 $/#.  Amount peanute = 12 #.
Price for cashews, 6.00 $/#.  Amount is variable, c.
Target price for mixture = 4.00 $/#.


Fundamentally, cost divided by pounds is price per pound.
(cost)/(quantity)=(price)


{{{highlight((12*3+c*6)/(12+c)=4)}}}.  Solve for c.
..
.
{{{highlight(c=6)}}}, pounds of cashews.