 
<translate> Bari lokacin da aka dauka ya zama = x Hanya ɗaya = 45x Jimlar nisan da aka yi tafiya = 2 * 45x = 90x Jimlar lokacin da aka ɗauka = x + 2x = 3x Matsakaicin gudu = 90x/3x = 30 Don haka amsar ita ce (A). <eng> Let the time taken be = x
One way distance = 45x
Total distance traveled = 2 * 45x = 90x
Total time taken = x + 2x = 3x
Average speed = 90x/3x = 30 So the answer is (A). 