Posted by Nick on Friday, December 2, 2011 at 7:20pm.
Sam and Nora leave their business office at the same time. Sam drives north at 53 km/h, Nora drives south at 47 km/h. How long until they are 50 km apart?

Math  Reiny, Friday, December 2, 2011 at 7:33pm
solve for t
53t + 47t = 50