SOLUTION: write the equation for:
on a canoe trip, Rita paddled upstream (against the current) at an average speed of 2 mi/h relative to the riverbank. On the return trip downstream (wit
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-> SOLUTION: write the equation for:
on a canoe trip, Rita paddled upstream (against the current) at an average speed of 2 mi/h relative to the riverbank. On the return trip downstream (wit
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Question 137267: write the equation for:
on a canoe trip, Rita paddled upstream (against the current) at an average speed of 2 mi/h relative to the riverbank. On the return trip downstream (with the current), her average speed was 3 mi/h. Find Rita's paddling speed in still water and the speed of the river's current. Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! Rita paddled upstream (against the current) at an average speed of 2 mi/h relative to the riverbank. On the return trip downstream (with the current), her average speed was 3 mi/h. Find Rita's paddling speed in still water and the speed of the river's current.
:
Let s = speed in still water.
Let c = speed of the current
:
Write an equation for each trip
s - c = 2; upstream
s + c = 3; downstream
-------------adding eliminates c
2s = 5
s =
s = 2.5 mph in still water
:
c = 3 - 2.5
c = .5 mph speed of the current
;
Check in the upstream equation : 2.5 - .5 = 2 mph
