I think the answer is 2 mph in still water and 3mph in the current

a girl rows a boat 6 miles upstream in 3 hours. she returns 6 miles downstream in 2 hours. how fast does she go each way?

Upstream speed is:

6 miles

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3 hours

Dividing numerator and denominator by 3:

2 miles

--------

1 hour

That's 2 mi/hr.

Downstream speed is:

6 miles

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2 hours

Dividing numerator and denominator by 2:

3 miles

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1 hour

That's 3 mi/hr.

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