Freshers India

The speed of the boat in still water in 12 kmph. It can travel downstream through 45 kms in 3 hrs. In what time would it cover the same distance upstream??                          

A boat covers a certain distance downstream in I hour, while it comes back in 1½ hours. If the speed of the stream be 3 kmph. what is the speed of the boat in still Water??                          

A man rows 13 km upstream in 5 hours and also 28 km downstream in 5 hours. The velpciy of the stream is :?                          

A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it take 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively??                          

A man can row 10 kmph in still water and the river is running at 2 kmph. If the man takes 1 hr to row to a place and back, how far is the place??                          

A man rows 750 m in 675 seconds against the stream and returns in 7 and half minutes. His rowing speed in still water is:?