A train is 385 meter long is running at a speed of 45 km/hour. In what time will it pass a bridge of 140 meter length  Answers
A) 42 seconds
B) 30 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 = 385+140= 
<gadget id="calculator">385+140</gadget>
<output>525</output>
525 meter   Time= Distance/speed   =525∗2/25=42seconds   Option 42 seconds
<result>A</result>
A train is 385 meter long is running at a speed of 45 km/hour. In what time will it pass a bridge of 140 meter length