Two people, 100 m apart, begin walking toward each other. One person walks at 3 m/s and the other person walks at 2.3 m/s. The time (seconds) at which they will meet is
A) 16 seconds.
B) 19 seconds.
C) 21 seconds.
D) 20 seconds.

Question

Quizplus · Accepted Answer

The total speed at which they are approaching each other is 3 m/s + 2.3 m/s = 5.3 m/s. To cover a distance of 100 m at this speed, the time required is 100 m / 5.3 m/s = 18.8679 seconds, which rounds to approximately 19 seconds.

Two People, 100 M Apart, Begin Walking Toward Each Other