Two trains, A and B starts from the stations X and Y towards each other. They take 4 hours 48 mins and 3 hours 20 mins to reach Y and X respectively after they meet. If train A is moving at 45 km/hr , then the speed of train B is?

Is there any method other than formula?

54 km/hr. Use the formula- Speed (A)/ Speed (B) = root of Time (B)/ root of Time (A). Here, 4 hr 48 min = 48/10 hr and 3 hr 20 min = 10/3 hr. Therefore, 45/ speed (B) = root ( 10/3 x 10/48), i.e., 45/speed ( B) = root ( 100/144) = 10/12. Upon simplification, speed of B comes out to be 54 km/hr.

Can you please explain the detailed solution?

54 km/hr