a man can row 22 kmph in still water.it takes him thrice as long to row up as to row down the river.find the rate of stream  Select
A) 13 km/hr.	B) 6 km/hr.	C) 9 km/hr.	D) 15 km/hr.	E) 11 km/hr.
Let manâ€™s rate upstream be x kmph.then ,his rate downstream=3xkmph.   So,2x=22 or x=11.   Rate upstream=11 km/hr,rate downstream=33 km/hr.   Hence,rate of stream=1/2(33-11)km/hr=11 km/hr.   Answer is 11 km/hr..
<result>E</result>
a man can row 22 kmph in still water.it takes him thrice as long to row up as to row down the river.find the rate of stream