A train of 35 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 most appropriate option.
A) 6 B) 3 C) 4 D) 9 E) 3.6
D = 35 * 60 + 1500= 
<gadget id="calculator">35 * 60 + 1500</gadget>
<output>3_600</output>
3600 m   T= 3600/60 * 18/5= 
<gadget id="calculator">3600/60 * 18/5</gadget>
<output>216</output>
216 sec= 3.6 mins   Answer:3.6
<result>E</result>
A train of 35 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?