IBPS Clerk Prelims Model Paper 6

When we are given total time for 2 journeys of equal distance,
One way distance = (multiplication of speeds/addition of speeds) x total time
So here distance from A to B
= [(30 x 34)/(30 + 34)] x 48/60 = 51/4
So total distance travelled = 2 x (51/4) = 51/2 = 25.5 km