A motorboat can travel 10 km against the stream in 30 minutes and returns back at the same point in 10 minutes. The speed of the stream is,

In 900 meters race, Ram gives Shyam a start of 150 meters and defeats him by 50 seconds. If the speed of Ram is 4.5 m/sec, then speed of Shyam is

A man rows a boat downstream 30 km and upstream 20 km. It takes him 5 hours to cover each distance. Which of the following are TRUE?

(A) The speed of the boat in still water is 10 km/hr.

(B) The speed of the boat in still water is 5 km/hr.

(C) The speed of the current is 1 km/hr.

(D) The speed of the current is 6 km/hr.

Choose the correct answer from the options given below:

A motor boat can travel 5 km/hr in still water. It travelled 9 km downstream in river and then returned back taking altogether 10 hours. The rate of flow of water in the river is:

Ram can row a boat in still water at the rate of 6 km/hr. He finds that it takes him twice as long to row upstream of a river as to row downstream of the same river, then the speed of the current of the river is

Arun's speed of swimming in still water is $5 \mathrm{~km} / \mathrm{hr}$. He swims between two points in a river and returns back to the same starting point. He took $20$ minutes more to cover the distance upstream than downstream. If the speed of the stream is $2 \mathrm{~km} / \mathrm{hr}$, then the distance between the two points is :

It is currently 9:40 AM. What will be the time in next 610 hours?