Mathematics, 20.06.2020 22:57, billy583887

Two piers, A and B, are located 105 km away from each other along a river. A motor boat, with a speed of 40 km/hour in still water, is cruising between the two piers. How much time, t (in hours) will the motorboat need to get from pier A to pier B and back, if the speed of the current is 5km/hour?

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Two piers, A and B, are located 105 km away from each other along a river. A motor boat, with a spee...