Q: A woman was driving on the highway when she suddenly got a flat tire. She pulled over and removed the flat tire and was about to replace it with the spare when all four of the wheel nuts were blown by a huge gust of wind off the side of the road and down the cliff. There was no way the woman could get to them. She sat down perplexed and frustrated until a bicyclist passed by and pointed out that she had all the wheel nuts she needed. She applied the advice and safely drove away. What was the advice?

A: Take one wheel nut off of the other 3 nuts and put it onto the spare so that each wheel had 3 nuts.