A train of 30 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?  Choices: A) 4 B) 3.3 C) 5 D) 7 E) 9
D = 30 * 60 + 1500= 
<gadget id="calculator">30 * 60 + 1500</gadget>
<output>3_300</output>
3300 m   T= 3300/60 * 18/5= 
<gadget id="calculator">3300/60 * 18/5</gadget>
<output>198</output>
198 sec= 3.3 mins   Answer: 3.3
<result>B</result>
A train of 30 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?