Problema Solution
The Nut Shoppe sells walnuts for $4.00 per pound and cashews for $7.00 per pound. How many pounds of cashews should be mixed with 10 pounds of walnuts to obtain a mixture that sells for $5.50 per pound?
Answer provided by our tutors
Let x pounds of cashews are mixed.
So, 4*10 + 7*x = 5.5*(10+x).
40 + 7x = 55 + 5.5x.
=> 1.5x = 15.
=> x= 15/1.5 = 10.
10 pounds of cashews will be mixed.