Brad has agreed to take over his brother's paper route while his brother is out of town. Brad's mother drives while Brad throws the papers. Out of a total route of 320 papers, Brad missed four times the number of front door areas as he hit. Brad begins to figure out the number of papers that landed at the front door like this:

4(X) + X = 320 papers

Where X equals the number of papers that landed at the front door.

• Finish the problem where Brad started and find how many papers actually landed at the front door.

Use words, numbers, and/or pictures to show your answer.