Question: A man walks at a speed of 3 km/hr and runs at a speed of 7 km/hr. How much time will the man require to cover a distance of 10 1/2 km, if he completes half of the distance, i.e., (5 1/4) km on foot and the other half by running?\nOptions:\n(A) 2 1/2\n(B) 2 1/6\n(C) 4 1/2\n(D) 2 1/1\n(E) 2 1/8 Let's think first. Some random reasoning:
User
Required time = (5 1/4)/3 + (5 1/4)/7 = 2 1/2 hours. The final answer: (A).
Assistant