Problema Solution
A sea lion swims 18 km from one feeding ground to another in 27 minutes. The return trip against the ocean current takes 36 minutes. How fast does the sea lion swim in still water?
Answer provided by our tutors
the lion speed in still water is 7/12km
Solution: set the water speed is X , the sea lion speed is S
(S+X)x27 =18
(S-X)x36=18
the S =7/12km