You can put this solution on YOUR website!
x=((200 miles)/(1))/((30 miles)/(1 hour))
=(200 miles)(1 hour)/(1)(30 miles)
=200 mh/ 30m
(cancel both miles for mile divided by mile is 1, and you will get the hour of your question)
=200/30 x h
=20/3 x h
=6.67 h