SOLUTION: Regina rows upstream at 4mph and then rows back with the current at 6mph. If her time was 2 hours and 15 minutes how far upstream did Regina row?

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Question 641588: Regina rows upstream at 4mph and then rows back with the current at 6mph. If her time was 2 hours and 15 minutes how far upstream did Regina row?
Answer by Alan3354(69443) About Me  (Show Source):
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Regina rows upstream at 4mph and then rows back with the current at 6mph. If her time was 2 hours and 15 minutes how far upstream did Regina row?
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Avg speed for the round trip = 2*4*6/(4+6) = 4.8 mi/hr
RT distance = 4.8*2.25 = 10.8 miles
One way = 5.4 miles