How long does a train 110 m long running at a speed of 72 kmph take to cross a bridge 132 m in length?	Choose the correct choice from the following answers.
A) 9.8 sec
B) 12.1 sec
C) 12.42 sec
D) 14.3 sec
E) 24.3 sec
72 km/hr= 72*5/18 m/sec   = 20 m/sec   time= D/S = 110+132/20   = 242/20= 
<gadget id="calculator">242/20</gadget>
<output>121/10 = around 12.1</output>
12.1 sec   ANSWER:12.1 sec
<result>B</result>
How long does a train 110 m long running at a speed of 72 kmph take to cross a bridge 132 m in length?