There is a road beside a river.two friends started from a place A,moved to a temple situated at another place B and then returned to A again.one of them moves on a cycle at a speed of 12 km/hr,while the other sails on a boat at a speed of 10 km/hr.if the river flows at the speed of 4 km/hr,which of the two friends will return to placeA first?	Choose the correct choice from the following:
A) cyclist and boat sailor
B) boat sailor
C) none
D) cyclist
E) cyclist and boat sailor both are reached at the same time
Clearly the cyclist moves both ways at a speed of 12 km/hr.   The boat sailor moves downstream @ (10+4)i.e.,14 km/hr and upstream @ (10-4)i.e., 6km/hr.   So,average speed of the boat sailor=(2*14*6/14+6)km/hr   =42/5 km/hr=8.4 km/hr.   since the average speed of the cyclist is greater ,he will return ta A first.   Answer is cyclist.
<result>D</result>
There is a road beside a river.two friends started from a place A,moved to a temple situated at another place B and then returned to A again.one of them moves on a cycle at a speed of 12 km/hr,while the other sails on a boat at a speed of 10 km/hr.if the river flows at the speed of 4 km/hr,which of the two friends will return to placeA first?