Macario is making 9 pounds of nut mixture with macadamia nuts and almonds. Macadamia nuts cost $8 per pound and almonds cost $5.25 per pound. How many pounds of almonds and how many pounds of macadamia nuts should Macario use for the mixture to cost $61.00 to make.

Answer 1

If there are x lbs of almonds, then the rest (9-x) is macadamias.
So, now just make sure the value of the parts adds up to the value of the mix:

5.25x + 8.00(9-x) = 61.00