How long does a train 110 m long running at the speed of 72 km/hr take to cross a bridge 132 m in length ?A12.1 secB10.5 secC20.5 secD11.2 secAnswer: A. 12.1 secRead Explanation:സമയം= ദൂരം/വേഗത = (110 + 132)/20 = 242/20 = 12.1 secOpen explanation in App