A convoy of 7 trucks, each 22 meters in length, pass through a construction zone 1/2 km long. Through the construction zone, they travel 3 m/s maintaining a distance of five meters between them. How long does it take for the entire convoy to make it through the zone? Choose the correct choice:
A) 3 min 22 sec B) 3 min 48 sec C) 4 min 12 sec D) 4 min 20 sec E) 4 min 36 sec
B   3 min 48 sec   There are 7 trucks of 22 m with six 5-m gaps between them passing a distance of 500 m.   d = 7 * 22 m + 6 * 5 m + 500 m = 684 m   T = 684 m / 3 m/s = 228 s = 3 min 48 sec
<result>B</result>
A convoy of 7 trucks, each 22 meters in length, pass through a construction zone 1/2 km long. Through the construction zone, they travel 3 m/s maintaining a distance of five meters between them. How long does it take for the entire convoy to make it through the zone?