SOLUTION: Ebb and Flo are pedal boating on the San Antonio River. Going down stream, their speed is 40 m/min. Coming back upstream, their speed is only 26 m/min. How fast do they move throug

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Question 1204939: Ebb and Flo are pedal boating on the San Antonio River. Going down stream, their speed is 40 m/min. Coming back upstream, their speed is only 26 m/min. How fast do they move through the water? How fast is the current?
Found 2 solutions by ikleyn, greenestamps:
Answer by ikleyn(52775) About Me  (Show Source):
You can put this solution on YOUR website!
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Their speed with no current is half the sum of their speeds downstream and upstream %2840%2B26%29%2F2 = 66%2F2 = 33 m/min.

The speed of the current is half the difference of their speeds downstream and upstream %2840-26%29%2F2 = 14%2F2 = 7 m/min.



Answer by greenestamps(13198) About Me  (Show Source):
You can put this solution on YOUR website!


Using logical reasoning, if the paddling speed PLUS the current speed is 40 and the paddling speed MINUS the current speed is 26, then the paddling speed must be halfway between 40 and 26: (40+26)/2 = 66/2 = 33. Then the current speed is the difference between the paddling speed and either the upstream or downstream speed: 40-33 = 7, or 33-26 = 7.

ANSWER: 7 m/min