SOLUTION: Two trains travel at speeds of 72km/h and 48km/h respectively. If they start at the same time and travel towards each other from two places 600m apart, how long will it be before t

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Question 1110390: Two trains travel at speeds of 72km/h and 48km/h respectively. If they start at the same time and travel towards each other from two places 600m apart, how long will it be before they meet?
Answer by ikleyn(52812) About Me  (Show Source):
You can put this solution on YOUR website!
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72 km/h = 20 m/second.

48 km/h = 15 m/second.


They will meet when they travel  this initial distance of 600 meters between them:


20*t + 15*t = 600,

(20+15)*t = 600,

t = 600%2F35 = 60%2F7 seconds = 8.5 seconds.

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