human
A father and a son start approaching each other at the same time from opposite ends of a hallway that is 16m long. If the father is walking three times as fast as the son, at what distance from the father's end of the hallway will they meet?
assistant
How fast is the father walking compared to his son? ** Since the father is walking 3 times as fast as his son, their speeds are in a ratio of 3:1 respectively
How fast will they cover distance? ** They started at the same time so they will cover distance at the same ratio of 3:1
How far did each of them walk? ** Each portion of the distance they covered is 16/(3+1) = <<16/(3+1)=4>>4m
How far did the father walk? ** The father covered three portions of the distance which is 3*4m = <<3*4=12>>12m from his end
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