Question 1102342
"A boat's crew rowed 39 kilometers downstream, with the current, in 3 hours. The return trip upstream, against the current, covered the same distance, and it took 13 hours. Find the crew's rowing rate in still water."
The question does not say how fast (kph not mph) the current is like the examples we covered in the class powerpoints.
Am I missing something in order to set this up properly?
13(x-?)=3(x-?)


Try:
3(s+c)=39
13(s-c)=39
Two equations with two unknowns
rate in still water (s) and current (c)