ALGEBRA QUESTION HELP
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ALGEBRA QUESTION HELP

[From: ] [author: ] [Date: 11-05-05] [Hit: ]
t = (5 mph) (1.t = (5/7) (1.......
How long will it take someone running at 12mph to catch up to someone walking at 5mph with an hour and a half head start?

I can't get it and don't know how to set it up, please explain.
The answer is 1 and 1/14 hours

Thank you

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(5 mph) (1.5 h) + (5 mph) t = (12 mph) t

(5 mph) (1.5 h) = (7 mph) t

t = (5 mph) (1.5 h) / (7 mph)

t = (5/7) (1.5 h) = (15/14) h = (1 + 1/14) h

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