A train 300 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 150 m long?  Select the correct option
A) 40  B) 36  C) 41  D) 42  E) 34
Speed = 45 * 5/18 = 25/2 m/sec   Total distance covered = 300 + 150= 
<gadget id="calculator">300 + 150</gadget>
<output>450</output>
450 m   Required time= 450 * 2/25= 
<gadget id="calculator">450 * 2/25</gadget>
<output>36</output>
36 sec   Answer: Option 36
<result>B</result>
A train 300 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 150 m long?