1. Rick was putting up a fence at the end of the lawn. "You planned to have the posts 5 feet apart," said his wife, coming out to watch. "But you've got them more than that." "So you noticed." Rick chuckled. "I found I was four posts short, so they had to be 7 feet apart to do the job." How long was the fence?

Fence 60 feet

Fence 50 feet

Fence 70 feet