An airport conveyor belt is 120 meters long, and moves at a constant rate of 2 m/s. A man carrying two suitcases walks

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Magoosh

An airport conveyor belt is 120 meters long, and moves at a constant rate of 2 m/s. A man carrying two suitcases walks at a constant rate of 4 m/s. How long will it take him to cross from one end of the conveyor belt to the other, if the man only walks for half the time he is on the conveyor belt?

A. 25 seconds
B. 30 seconds
C. 42 seconds
D. 45 seconds
E. 52 seconds

OA B