. Distance covered by train = 5200 km, Time= 13 hrs. Speed of a train =`5200/13` = 400 km/hr. Average speed of a bus = `1/2` × 400 = 200 km/hr. Time= 36 minutes = `36/60` = `3/5` hrs. Distance covered by bus = Speed × Time = 200 × `3/5` = 120 km.
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