Question

1.

Mike has coffee worth $4 per pound that he wishes to mix with 20 pounds of
coffee worth $7 per pound to get a mixture that can be sold for $5 per pound,
How many pounds of the cheaper coffee should he use?

Answer 1

40 pounds

Explanation:

1. Set up your equation, 4x+140=5x+100

2. Solve for x, x=40