A train consists of 48 boxcars pulled by 2 engines. The boxcars are 15 meters long and the two engines are each 20 meters long. It crosses over a highway 24 meters wide at a speed of 14 m/s. How long does it take for the entire train to cross?  Select:
A) 56 sec	B) 63 sec	C) 72 sec	D) 81 sec	E) 88 sec
56 sec   56 sec   d = 48 * 15 m + 2 * 20 m + 24 m= 784 m   T = 784 m / 14 m/s = 56 s
<result>A</result>
A train consists of 48 boxcars pulled by 2 engines. The boxcars are 15 meters long and the two engines are each 20 meters long. It crosses over a highway 24 meters wide at a speed of 14 m/s. How long does it take for the entire train to cross?