SOLUTION: a boat can maintain a speed of 6 mph over still water. piloting the boat from a dock to a campsite some distance up river took 6 hours. after camping for the weekend, the return tr
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Question 893647: a boat can maintain a speed of 6 mph over still water. piloting the boat from a dock to a campsite some distance up river took 6 hours. after camping for the weekend, the return trip from the campsite to the dock took 4 hours. rounding to the nearest tenth, how fast is the river?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
a boat can maintain a speed of 6 mph over still water. piloting the boat from a dock to a campsite some distance up river took 6 hours. after camping for the weekend, the return trip from the campsite to the dock took 4 hours. rounding to the nearest tenth, how fast is the river?
***
let c=speed of river current
6+c=speed of boat downstream
6-c=speed of boat upstream
distance=travel time*speed
..
6(6-c)=4(6+c)
36-6c=24+4c
10c=12
c=1.2
how fast is the river current? 1.2 mph
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