A train is 410 meter long is running at a speed of 45 km/hour. In what time will it pass a bridge of 140 meter length Select the correct option:
A) 20 seconds  B) 44 seconds  C) 40 seconds  D) 50 seconds  E) None of these
Explanation:   Speed = 45 Km/hr = 45*(5/18) m/sec   = 25/2 m/sec   Total distance = 410+140= 
<gadget id="calculator">410+140</gadget>
<output>550</output>
550 meter   Time= Distance/speed   =550∗2/25=44seconds   Option 44 seconds
<result>B</result>
A train is 410 meter long is running at a speed of 45 km/hour. In what time will it pass a bridge of 140 meter length