A series of boxes are placed on a conveyor belt at one end and unloaded at the other. The boxes are each 0.5 meters on each side and are placed immediately adjacent to one another as they are loaded. If the conveyor belt is 30 meters long and moves the boxes at a speed of 0.25 m/s, how long does it take for 100 boxes to be loaded and unloaded?  Choose the correct choice from the following choices
A) 4 min 30 sec
B) 4 min 50 sec
C) 5 min 20 sec
D) 5 min 40 sec
E) 6 min 10 sec
5 min 20 sec   5 min 20 sec   d = 100 * 0.5 m +30 m = 80 m   T = 80 m / 0.25 m/s = 320 s = 5 min 20 sec
<result>C</result>
A series of boxes are placed on a conveyor belt at one end and unloaded at the other. The boxes are each 0.5 meters on each side and are placed immediately adjacent to one another as they are loaded. If the conveyor belt is 30 meters long and moves the boxes at a speed of 0.25 m/s, how long does it take for 100 boxes to be loaded and unloaded?