A train of 24 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 4.5 km long?	Select the correct option.
A) 4	B) 3	C) 5	D) 6	E) 9
6 = 25 * 60 + 4500= 
<gadget id="calculator">25 * 60 + 4500</gadget>
<output>6_000</output>
6000 m   T= 6000/60 * 18/5= 
<gadget id="calculator">6000/60 * 18/5</gadget>
<output>360</output>
360 sec= 6 mins   Answer: 6
<result>D</result>
A train of 24 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 4.5 km long?