Answer : 3 20 km Explanation : Answer: C) 20 km Explanation: Average speed = 2aba b, here a=25 b=4 = 2 x 25 x 4/(25 4) = 200/29 km/hr. Distance covered in 5 hours 48 minutes = Speed x time = (200/29)x (29/5) Distance covered in 5 hours 48 minutes = 40kms. Distance of the post office from the village = (40/2) = 20 km.

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