How many seconds will a train 60 meters long take to cross a bridge 120 meters long if the speed of the train is 30 m/sec?
Choose the correct choice from the following choices:
A) 6 sec
B) 8 sec
C) 15 sec
D) 3 sec
E) 5 sec
D = 60+120= 
<gadget id="calculator">60+120</gadget>
<output>180</output>
180   S= 30 mps   T = 180/30= 
<gadget id="calculator">180/30</gadget>
<output>6</output>
6 sec   6 sec) 6 sec
<result>A</result>
How many seconds will a train 60 meters long take to cross a bridge 120 meters long if the speed of the train is 30 m/sec?