Arithmetic Questions And Answers :: Boats Streams: part1

11.A man can swim 3 km/hr in still water. If the velocity of the stream be 2 km/hr, the time taken by him to swim to place 10 km upstream and back, is :

12.A man rows to a place 48 km distant and back in 14 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is :

13.A boat goes 40 km upstream in 8 hours and 36 km downstream in 6 hours. The speed of the boat in standing water is :

14.The current of a stream runs at 1 km/hr. A motor boat goes 35 km upstream and back again to the starting point in 12 hours. The speed of motorboat in still water is :

15.A boat moves upstream at the rate of 1 km in 10 minutes and downstream at the rate of 1 km in 6 minutes. The speed of the current is :