Two boys start running straight toward each other from two points that are 100m apart.One runs with a speed of 5m/s,while other moves at 7m/s.How close are they to the slower one's starting point when they meet?

Question

4755 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-07-24T04:56:31

Let the two boys meet after #t# sec their start.

So

#5t+7t=100#

#=>t=100/12=25/3# s

The distance of meeting point is #25/3xx5=125/3# m apart from the starting point of slower boy.