### Home > A2C > Chapter Ch4 > Lesson 4.2.1 > Problem 4-69

First, define variables you can use to write equations.

Let the number of pounds of Colombian coffee beans

Let

*the number of pounds of Mocha Java coffee beans*

Next, set up an equation to represent the information about cost.

Now set up a second equation to show the total number of pounds.

Finally, solve your system of equations.