A train of 245-meter length crosses a platform of its double length in 45 second. Another train coming from opposite direction of length 364 meter with speed 63 km/hr cross first train in what second?

Train 1 length = 245m, platform length = 2×245 = 490m. Total distance = 245+490 = 735m. Time = 45 seconds. Train 1 speed = 735/45 = 16.33 m/s = 58.8 km/hr ≈ 59 km/hr. Train 2 length = 364m, speed = 63 km/hr. When crossing in opposite directions, relative speed = 59+63 = 122 km/hr = 33.89 m/s. Total distance to cross = 245+364 = 609m. Time = 609/33.89 = 17.97 seconds ≈ 18 seconds. This matches none of the options A-D, so E (None of these) is correct.