A train 'A' of length $350$ meters passes a pole in $17.5$ seconds and passes another train 'B' running in the opposite direction in $...
Question
A train 'A' of length $350$ meters passes a pole in $17.5$ seconds and passes another train 'B' running in the opposite direction in $15.4$ seconds. If the length of train 'B' is $420$ meters, find the time taken by train 'A' to pass train 'B' when both trains run in the same direction.