November 25, 2024
Explanation:
(d) Upstream Speed = Distance travelled upstream/Time taken = 96/8 = 12 km/h
Downstream speed = Distance travelled downstream/Time taken = 96/6 = 16 km/h.
In one trip upstream and downstream, travelling for an hour each, the boat will be effectively 4 km (12km up followed by 16 down) downstream of A. So, in total 5 such trip the boat will be 4 x 5 = 20 km downstream of A. Ans.