A & B are two towns. A person covers the distance from A to B on cycle at 17kmph and returns to A by a boat running at a uniform speed of 8kmph. His average speed for the whole journey is Choices:
A) 09.88kmph
B) 12.88kmph
C) 10.88kmph
D) 16.45kmph
E) 13.71kmph
10.88kmph   10.88kmph   When same distance is covered with different speeds, then the average speed = 2xy / x+y = 10.88kmph
<result>C</result>
A & B are two towns. A person covers the distance from A to B on cycle at 17kmph and returns to A by a boat running at a uniform speed of 8kmph. His average speed for the whole journey is