A person can swim in still water at 5 m/s. He moves in a river of velocity 3 m/s. First down the stream next same distance up the steam the ratio of times taken are

A person can swim in still water at 5 m/s. He moves in a river of velo

1.	A person can swim in still water at 5 m/s. He moves in a river of velocity 3 m/s. First down the stream next same distance up the steam the ratio of times taken are
Answer» `1:1` `1:2` `1:4` `4:1` ANSWER :C