A. 16 hours

B. 18 hours

C. 20 hours

D. 24 hours

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?

At what approximate time between 4 and 5 am will the hands o f a clock be at right angle?