A swimmer crosses a flowing stream of width `omega` to and fro in time `t_(1)`. The time taken to cover the same distance up and down the stream is `t_(2)`. If `t_(3)` is the time the swimmer would take to swim a distance `2omega` in still water, then

A swimmer crosses a flowing stream of width d' to and fro in time t_(1) . The time taken to cover the same distance up and down the stream is t_(2) , If t_(3) is the time the swimmer would take to swim a distance 2d in still water, then

A swimmer crosses a flowing stream of width d to and fro normal to the flow of the river at time t_(1) . The time taken to cover the same distance up and down the stream is t_(2) . If t_(3) is the time the swimmer would take to swim a distance 2d in still water, then relation between t_(1),t_(2) & t_(3) .

A boat goes 6 km in an hour in still water. It takes thrice as much time in covering the same distance against the stream. What is the speed of the stream?

Total distance between A and B is d kms . If the distance travelled along the stream is three time of the total distance and the distance travelled against the stream is two times of the total distance . If the time taken to cover the distance along the stream is 10% less then the time taken to cover the distance against the stream .if a person cover a distance of 21 km in 1 hr 24 min along the stream , then find the rate of current ?