A train is 320 meter long is running at a speed of 45 km/hour. In what time will it pass a bridge of 140 meter length? Choose the correct choice:
A) 11 seconds  B) 38 seconds  C) 40 seconds  D) 88 seconds  E) 36.8 seconds
Speed = 45 Km/hr = 45*(5/18) m/sec = 25/2 m/sec   Total distance = 320+140= 
<gadget id="calculator">320+140</gadget>
<output>460</output>
460 meter   Time= Distance/speed   = 460 * (2/25)= 
<gadget id="calculator">460 * (2/25)</gadget>
<output>184/5 = around 36.8</output>
36.8 seconds   Answer: 36.8 seconds
<result>E</result>
A train is 320 meter long is running at a speed of 45 km/hour. In what time will it pass a bridge of 140 meter length?