A man can row upstream at 29km/hr and down stream at 15km/hr find mans rate of the current ?	Select.
A) 9.8km/hr	B) 3.6km/hr	C) 8.9km/hr	D) 7km/hr	E) 5.9km/hr
given upstream(u) =29km/hr   down stream (v)= 15km/hr rate of the current =1/2(u-v) =1/2(29-15)=7km/hr   Answer is (7km/hr)
<result>D</result>
A man can row upstream at 29km/hr and down stream at 15km/hr find mans rate of the current ?