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

Harvey’s Espresso Express, a drive-through coffee stop, is famous for its great house coffee, a blend of Colombian and Mocha Java beans. Their archrival, Jojo’s Java, sent a spy to steal their ratio for blending beans. The spy returned with a torn part of an old receipt that showed only the total number of pounds and the total cost,

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.