How many pounds of coffee worth $1.50 per pound should be mixed with coffee worth $2.00 per
pound to obtain 3 pounds of a new blend worth $1.70 per pound?

1.8 pounds of coffee worth $ 1.50 per pound should be mixed with 1.2 pounds of coffee worth $ 2.00 per pound to obtain 3 pounds of a new blend worth $ 1.70 per pound

Solution:

Let "x" be the pounds of coffee worth $ 1.50 per pound

Then, (3 - x) be the pounds of coffee worth $ 2.00 per pound

So, "x" pounds of coffee worth $ 1.50 per pound should be mixed with (3 - x) pounds of coffee worth $ 2.00 per pound to obtain 3 pounds of a new blend worth $ 1.70 per pound

Therefore, a equation is framed as,

Solve the above equation for "x"

Therefore, we need 1.8 pounds of coffee worth $ 1.50 per pound

Then, (3 - x) = 3 - 1.8 = 1.2 pounds of coffee worth $ 2.00 per pound

i think the amount would be $140.62