<PRE><B>Question 351572</B>
Total distance to be travel = 230 + 210 = 440 ft.

Relative velocity of trains = 50+ 60 =110 mph  = 5280 *110 ft/h  
                                  ( because traveling in different direction)  

Time taken =  distance / velocity 
          
            = 440/ ( 5280 *110 ) hour
            
            =  4/ 5280 hour
           
            = ( 4 /5280 ) * 3600 seconds 
            
            =  2.73 seconds (approx)
         
              

Sometimes there may be typing mistake in solution of a problem, so please ignore it. Understand the concept and try the problem yourself.

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