They will never meet each other.
The question should state:
Three boys A, B, and C are situated at the
otherwise the three boys would already be together at one vertex.
One of the boys moves towards one other with constant speed
Then as time increases, the distance travelled by each boy remains the same.
In this question we are given: A always moves towards B, B towards C, and C towards A, resulting in the vectors:
Since the motion of each boy is continuously identical in a direction around the perimeter of the triangle, they will never meet.
Note: This question is