1.

Two Trains A And B Start Simultaneously From Stations X And Y Towards Each Other Respectively. After Meeting At A Point Between X And Y,train A Reaches Station Y In 9 Hours And Train B Reaches Station X In 4 Hours From The Time They Have Met Each Other. If The Speed Of Traina Is 36 Km/hr, What Is The Speed Of Train B?

Answer»

Naming the trains as A and B. Then,

(A's speed) : (B's speed) = (b : a)^.5 

where b and a is the time taken by trains B and A, to reach their destination after they meet.

HENCE,

36/B's speed = (4: 9)^.5

=> B's speed = 54km/hr.

Naming the trains as A and B. Then,

(A's speed) : (B's speed) = (b : a)^.5 

where b and a is the time taken by trains B and A, to reach their destination after they meet.

hence,

36/B's speed = (4: 9)^.5

=> B's speed = 54km/hr.


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