 
<translate> Bari lokacin da aka dauka ya zama = x Hanya ɗaya = 51x Jimlar nisan da aka yi tafiya = 2 * 51x = 102x Jimlar lokacin da aka ɗauka = x + 2x = 3x Matsakaicin gudu = 102x/3x = 34 Don haka amsar ita ce (B). <eng> Let the time taken be = x
One way distance = 51x
Total distance traveled = 2 * 51x = 102x
Total time taken = x + 2x = 3x
Average speed = 102x/3x = 34 So the answer is (B). 