# Ralph bought some magazines at $4 each and some dvds at $12 each. He spent $144 and bought a total of 20 items. How many magazines and how many movies did he buy?

##### 1 Answer

Mar 20, 2018

Ralph bought

#### Explanation:

Let

"Ralph bough some magazines at

"He bought a total of

We now have two equations and two unknowns, so we can solve the linear system.

From

Substituting

We can use this result in

Hence, Ralph bought