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MaRussiya [10]
4 years ago
7

Jonathan and Samantha row their canoe 39 miles downstream in 3 hours. After a​ picnic, they row back upstream. After 4 hours the

y only travel 20 miles. Assuming that they canoe at a constant rate and the​ river's current is​ constant, find the speed at which Jonathan and Samantha can row in still water.
Mathematics
1 answer:
harina [27]4 years ago
8 0
To find avg downstream is 39/3 = 13 mph
upstream is 20/4 = 5mph

the average of the 2 is the still water speed which is 8 mph
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