A train of 50 carriages, each of 60 meters length, when an engine also of 60 meters length is running at a speed of 60 kmph. In what time will the train cross a bridge 1.5 km long?	Choose the correct choice from the following answers.
A) 6  B) 3  C) 4  D) 4.5  E) 2
4.5 = 50 * 60 + 1500 = 3000 m   T = 4500/60 * 18/5= 
<gadget id="calculator">4500/60 * 18/5</gadget>
<output>270</output>
270 sec= 4.5 mins   Answer:4.5
<result>D</result>
A train of 50 carriages, each of 60 meters length, when an engine also of 60 meters length is running at a speed of 60 kmph. In what time will the train cross a bridge 1.5 km long?