A man can row upstream at 8km/hr and down stream at 11km/hr find mans rate in still water ?	Select:
A) 9.5km/hr B) 4.5km/hr C) 6.5km/hr D) 3.5km/hr E) 5.5km/hr
:	given upstream(u) =8km/hr   down stream (v)= 11km/hr rate in still water =1/2(u+v)=1/2(8+11)=9.5km/hr 9.5km/hrnswer is (9.5km/hr):9.5
<result>A</result>
A man can row upstream at 8km/hr and down stream at 11km/hr find mans rate in still water ?