A train crossed a 140 m long platform in 15 seconds and a 180 m long platform in May 24, 2022 by admin โช Choose the correct option.A train crossed a 140 m long platform in 15 seconds and a 180 m long platform in 17 seconds. The speed of the train was :A. 69 km/hrB. 75 km/hrC. 72 km/hrD. 66 km/hr Submit Answer