Question 322510
First assign variables for each nut. Since it is only asking for the pounds of each, the costs are irrelevant.

Peanuts= x
Cashews= x-15
Brazil Nuts= 50-(x+x-15) or 2x-35

Add all of the "nuts" together to equal 50lbs

(x)+(x-15)+(2x-35)=50
4x-50=50
4x=100
x=100/4

(peanuts)     x=25 lbs
(cashews)  x-15=10 lbs
Brazils)  2x-35=15 lbs

check: 20+10+15=50
             50=50