Mathematics

Mathematics

Problem

A motorboat travels 24 km downstream and then 24 km upstream in a total time of 5 hours. The speed of the boat in still water is 10 km/h. What is the speed of the stream? a) 3 km/h3\text{ km/h} b) 2 km/h2\text{ km/h} c) 4 km/h4\text{ km/h} d) 7 km/h7\text{ km/h}

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