A train is 510 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 answer:
A) 76 seconds
B) 18 seconds
C) 52 seconds
D) 19 seconds
E) 45 seconds
Speed = 45 Km/hr = 45*(5/18) m/sec = 25/2 m/sec   Total distance = 510+140= 
<gadget id="calculator">510+140</gadget>
<output>650</output>
650 meter   Time= Distance/speed   = 650 * (2/25)= 
<gadget id="calculator">650 * (2/25)</gadget>
<output>52</output>
52 seconds   Answer: 52 seconds
<result>C</result>
A train is 510 meter long is running at a speed of 45 km/hour. In what time will it pass a bridge of 140 meter length?