SOLUTION: Roland had already covered 14 kilometers when Charlemagne headed out to catch him. Charlemagne's rate was 11 kph, whereas Rolands rate was 7 1/2 kph. How long did it take Charkemag

Algebra ->  Algebra  -> Probability-and-statistics -> SOLUTION: Roland had already covered 14 kilometers when Charlemagne headed out to catch him. Charlemagne's rate was 11 kph, whereas Rolands rate was 7 1/2 kph. How long did it take Charkemag      Log On

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Question 122322: Roland had already covered 14 kilometers when Charlemagne headed out to catch him. Charlemagne's rate was 11 kph, whereas Rolands rate was 7 1/2 kph. How long did it take Charkemagne to catch Roland?
Answer by solver91311(12126) About Me  (Show Source):
You can put this solution on YOUR website!

The question is simply how long would it take Charlemagne to travel the 14 km
distance at the difference in their rates.  Charlemagne's rate is 3.5 km/hr
faster than Roland's, so the problem is the same if Roland had a 14 km head
start but never moved and Charlemagne had a rate of 3.5 km/hr traveling to
Roland's location.


14%2F3.5=28%2F7=4 hours.