Boats and Streams - General Aptitude

Q1:

In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is:

A 3 km/hr

B 5 km/hr

C 8 km/hr

D 9 km/hr

ANS:C - 8 km/hr

Speed in still water = 1 (11 + 5) kmph = 8 kmph.
2