SOLUTION: Al goes 8 mph; Ben goes 20 mph in the opposite direction. How many hours has Ben traveled when they are 180 miles apart?

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Question 529643: Al goes 8 mph; Ben goes 20 mph in the opposite direction. How many hours has Ben traveled when they are 180 miles apart?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Think of this as Al standing still and Ben
going the opposite way at the sum of their
speeds
Ben is going +8+%2B+20+=+28+ mi/hr
+180+=+28%2At+
+t+=+180%2F28+
+t+=+6.43+
+.43%2A60+=+26+
Ben has traveled for 6 hrs and 26 min