Question
A person travels at the equivalent triangle area along
with the plains of the triangular area, at 18 kmph, 24 km, and 36 kmph. Tell the average speed of travel.Solution
Let the side of the triangle be 72 km. As we know, Average speed = total distance/total time Time to cover 72 km distance with the speed of 18 km/hr = 72/18 = 4 hrs Time to cover 72 km distance with the speed of 24 km/hr = 72/24 = 3 hrs Time to cover 72 km distance with the speed of 36 km/hr = 72/36 = 2 hrs Average speed = (3 x 72)/ (4 + 3 + 2) = 216/9 = 24 km/hr
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