A train with 120 wagons crosses John who is going in the same direction, in 36 seconds. It travels for half an hour from the time it starts ove(who is also riding on his horse) coming from the opposite direction in 24 seconds. In how much time after the train has crossed the Mike do the John meets to Mike?rtaking the John (he is riding on the horse) before it starts overtaking the Mike
Choose the correct choice from the following options
A) 2534 B) 3545 C) 3521 D) 4564 E) 3576

Rationale: let the length of the train be l metres and speeds of the train arun and sriram be r , a and s respectively , then - - - - - - - - - - ( i ) and - - - - - - - - - ( ii ) from eq . ( i ) and ( ii ) 3 ( r - a ) = 2 ( r + k ) r = 3 a + 2 k in 30 minutes ( i . e 1800 seconds ) , the train covers 1800 r ( distance ) but the arun also covers 1800 a ( distance ) in the same time . therefore distance between arun and sriram , when the train has just crossed sriram = 1800 ( r - a ) - 24 ( a + k ) time required = = ( 3600 - 24 ) = 3576 s e
Answer: E