A man can row upstream at 15kmph and downstream at 45kmph. Find the rate of current ?
Pick.
A) 15km/hr  B) 20km/hr  C) 10km/hr  D) 5km/hr  E) 25km/hr
Rate of current = 1/2 (45-15) = 15km/hr   15km/hrnswer is 15km/hr
<result>A</result>
A man can row upstream at 15kmph and downstream at 45kmph. Find the rate of current ?