Hey there. I have a word problem here, I think this is the right place to post. I am trying to get back into understanding algebra but I ran into a word problem that I can not begin to think of a formula able to solve that D=R*T can't. I guess I need help understanding how to formulate the problem;

A freight train left Washington traveling

east 7.8 hours before a diesel train. The

diesel train traveled in the opposite direction

going 17.1 mph slower then the freight train

for ten hours after which time the trains

were 941 mi. apart. How fast did the freight

train travel?

Your attention is greatly appreciated. Thank you!