SOLUTION: One boat travelling 15 mph goes 36 miles downstream in the same amount of time that another boat going 20 mph goes 34 miles upstream. How fast is the current in mph? Enter only the
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Question 920344: One boat travelling 15 mph goes 36 miles downstream in the same amount of time that another boat going 20 mph goes 34 miles upstream. How fast is the current in mph? Enter only the numerical result. Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! One boat travelling 15 mph goes 36 miles downstream in the same amount of time that another boat going 20 mph goes 34 miles upstream. How fast is the current in mph? Enter only the numerical result.
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let c=speed of current
15+c=speed of boat downstream
20-c=speed of boat upstream
travel time=distance/speed
..
36(20-c)=34(15+c
720-36c=510+34c
70c=210
c=3
How fast is the current in mph? 3
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