Question 947108
   

      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