Sam M. answered • 06/05/13

Mr. Gets Results

I love this problem because I've been to both of those countries.

Now, I'm going to write that 60G + 90N = 180

In the previous equation, the G stands for the price of Guatemalan coffee, per pound. N, of course, is the same thing for Nicaraguan coffee. Now I can use algebra to solve for either G or N:

G = 3 - 1.5N and also...

N = 2 - (2/3)G

Remember, there are multiple possibilities because the cost of each coffee depends on the cost of the other.