I need an equation for this scenario

Question

I need an expression for: Joe and Louise are making a drive from San Diego to Salt Lake City. After four hours of driving, they are 507 miles from Salt Lake City. Eight hours into their trip, they are only 267 miles away from their destination. Assume they average the same speed for the entire trip.

Answer 1

############ repeet, me did this a fyu minuts ago . . . speed=60 MPH . . . distans yet tugo=267, so time left=267/60=4.45 ours . . . At this point em alredee drove 8 ours*60=480 miles . . . total distans=480+267=747 . . . total time=8+4.45=12.45 ours . .. or 12 ours+27 minuts