Problem Solving (PS) | The moving walkway is a 300-foot long walkway consisting of a convey

There is a logical way to think about this question

Savg=Dtotal/Ttotal

Since he is going to meet the pple at a certain point, this means that they will reach to the end at the sametime! Hence, we can use the time of pple to reach the end of the trip which is t=180f/ 3f/sec = 60sec. Now S=300/60= 5 sec.

Answer is E
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