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OpenStudy (anonymous):
sarah is at point A on the north bank of a long, straight river 6km wide. directly across from her on the south bank is a point B, and she wishes to reach a cabin C located x km down the river from B. given that sarah can row at 6 km/h(including the effect of the current) and run at 10km/h, what is the minimum time (to the nearest minute) required for her to travel from A to C in each case? a)x=4 b)x=6
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