SOLUTION: One man starts out from a city and walks North at the rate of 3 kilometers per hour. Three hours later, a second man starts from the same place and walks the same route at 4 kilome

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Question 872430: One man starts out from a city and walks North at the rate of 3 kilometers per hour. Three hours later, a second man starts from the same place and walks the same route at 4 kilometers per hour. How far will he have to go before he overtakes the first man?
Equation & answer please! Thank You so much!

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
D = rt = (3kmph)t = (4kmph)(t-3hr)
3t = 4t - 12
12hr = t