SOLUTION: My friend and I are heading to board a plane. My friend rides on an escalator while I walk along side the escalator. If my friend is travelling at 6 miles per hour while I am walki

Question 312201: My friend and I are heading to board a plane. My friend rides on an escalator while I walk along side the escalator. If my friend is travelling at 6 miles per hour while I am walking at 4 miles per hour. How far (approximately) will my friend be ahead of me after 20 minutes?
Found 2 solutions by solver91311, nyc_function:
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

You can eliminate most of the complexity of this problem if you pretend to stand still and let your friend travel a 2 mph for hour.

By the way, where would you ever find a 2 mile (or greater) long escalator? You would think that the people who make up these questions would use their head for something besides a hat-rack.

John

Answer by nyc_function(2741) (Show Source): You can put this solution on YOUR website!
Well, if you guys walked for an hour, obviously, your friend would go six miles and you would go four. The difference is two miles. But that's for an hour. For twenty minutes, simply divide the two miles by 3 (20 minutes is one third of an hour), so your friend would be 2/3 miles (3520 feet) ahead of you.

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