Question

A boat moves from the city x to city 'y' in the upstream and then returns from city 'y' to city 'x' in the downstream. If in still water the speed is 40 km/hr. and the speed of stream is 10 km/hr. then what is the average speed of the total journey?

• A. 36.5 km./hr.
• B. 34.5 km./hr.
• C. 37.5 km./hr.
• D. 33.33 km./hr.

Answer 1

Answer: (C)