A man takes 3 hours 45 minutes to row a boat 15 km downstream of a river and 2hours30minutes to cover a distance of 5km upstream. find the speed of the river current in km/hr. Choose the correct choice from the following options:
A) 1 km/hr B) 2 km/hr C) 3 km/hr D) 4 km/hr E) 5 km/hr
rate downstream=(15/3 Â¾)km/hr=(15*4/15)km/hr=4km/hr.   Rate upstream=(5/2 Â½)km/hr=(5*2/5)km/hr=2km/hr.   Speed of current=1/2(4-2)km/hr=1km/hr   1 km/hrNSWER 1 km/hr
<result>A</result>
A man takes 3 hours 45 minutes to row a boat 15 km downstream of a river and 2hours30minutes to cover a distance of 5km upstream. find the speed of the river current in km/hr.