What is the length of a bridge (in meters), which a train 140 meters long and travelling at 45 km/h can cross in 30 seconds?
Choose the correct choice from the following options
A) 205  B) 220  C) 235  D) 250  E) 265
speed = 45 km/h = 45000 m / 3600 s = 25/2 m/s   In 30 seconds, the train can travel  25/2 * 30= 
<gadget id="calculator"> 25/2 * 30</gadget>
<output>375</output>
375 meters   375= length of train + length of bridge   length of bridge = 375 - 140= 
<gadget id="calculator">375 - 140</gadget>
<output>235</output>
235 meters   The answer is 235.
<result>C</result>
What is the length of a bridge (in meters), which a train 140 meters long and travelling at 45 km/h can cross in 30 seconds?