1.

Two persons A and B are walking with speed 4km/hr and 5km/hr respectively in the same direction . Find how far will B be from A after 2hrs​

Answer»

Answer:

Relative VELOCITY of B w.r.t A

Vba = Vb - Va

       = 5-4

       = 1

therefore DISTANCE of b from a after two hrs will be,

        d= Vba X t

          = 1 x 2

           = 2 km

ans is 2 km

hope it helps :)



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