SOLUTION: A boat on a river travels downstream between two points, 60 mi apart, in one hour. The return trip against the current takes 2.5 hours. What is the boat's speed?
___mph
How fas
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Question 569716: A boat on a river travels downstream between two points, 60 mi apart, in one hour. The return trip against the current takes 2.5 hours. What is the boat's speed?
___mph
How fast does the current in the river flow?
___ mph
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
b + c = 60 mi / 1 hr = 60 mph
b - c = 60 mi / 2.5 hr = 24 mph
adding equations ___ b + c + b - c = 60 + 24 ___ 2b = 84 ___ b = 42
substituting ___ (42) + c = 60 ___ c = 18
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