2 Coins Add up to 30 Cents

You have 2 coins that add up to 30 cents. One of the coins is not a nickel (5 ¢). What kind of coins do you have? You can assume that you are in the United States.

Answer

A quarter (25 ¢) and a nickel (5 ¢). One of the coins is not a nickel, the other is.