Question
A boat has a speed of 52 km/h in still water. It takes
8 hours to travel from point B to point A downstream. The total distance between the two points is 448 km. What is the time taken by the boat to travel from point A back to point B?Solution
Let, speed of the stream = x km/h So, (52 + x) × 8 = 448 8x = 448 – 416 8x = 32 x = 4 Therefore, time taken by boat to reach point B from point A = 448/48 = 9 hours 20 minutes
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