Zachary has 25 country music CDs, which are one-fifth of his CD collection. How many CDs does Zachar

[math_celebrity]

Zachary has 25 country music CDs, which are one-fifth of his CD collection. How many CDs does Zachary have?

Let the number of Zachary's CD's be:
25 * 1/5 = 5 country music CD's