SOLUTION: a boat goes 350 miles downstream in the same time go 250 miles upstream . The speed of the current is 5 miles per hour. Find the speed of the boat in still water. I know the answer
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Question 602853: a boat goes 350 miles downstream in the same time go 250 miles upstream . The speed of the current is 5 miles per hour. Find the speed of the boat in still water. I know the answer is 45 mph but i want to know how they got it.
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
t = d / r ___ the times are equal
350 / (b + 5) = 250 / (b - 5)
"cross" multiplying ___ 350b - 1750 = 250b + 1250
100b = 3000
the answer you "know", appears to be incorrect
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