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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/h
3\text{ km/h}
3
km/h
b)
2
km/h
2\text{ km/h}
2
km/h
c)
4
km/h
4\text{ km/h}
4
km/h
d)
7
km/h
7\text{ km/h}
7
km/h
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