Question

Randall wants to mix 42 lbs of nuts worth $2 per lb with some nuts worth $4 per pound to make a mixture worth $4 per lb. how many pounds of $4 must he use

Answer 1

an infinite number of pounds of $4 nuts

Explanation:

If any nuts worth less than $4 per pound are put into the mix with nuts worth $4 per pound, the value of the mix will be less than $4 per pound.

The mix Randall proposes cannot be made.