A. 40 minutes

B. 38 minutes

C. 36 minutes

D. 31 minutes

E. 49 minutes

Speed of a boat in standing water is 9 kmph and the speed of the stream is 1.5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is:

In a race of 200m, A can beat B by 31 m and C by 18 m. In a race of 350m, C will beat B by:

A man rows downstream at 32 km and 14 km upstream at 13kmph.the speed of the stream is:

325-(12)² + 75= (?)²-68

A boat covers a certain distance downstream in 1 hour, while it comes back in 1 ½ hours. If the speed of the stream be 3 kmph. What is the speed of the boat in still water?