Algebra
posted by coried .
Word problem:
Ken and Kara are 29 miles apart on a calm lake paddling towards each other. Ken paddles at 3 miles per hour. Kara paddles at 6 miles per hour. How long will it take them to meet?

You can do this the hard way, or...
what if one were not paddling, and the other paddled at 9mi/hr?
time=29mi/(9mi/hr)