contestada

A man can now 6 km/hr in still
water. It takes him twice as long to
row Up as to row down the river
and rate as stream​

Respuesta :

ashmitk

ANSWER:

2KM/H

EXPLANATION:

Time upstream: time downstream=2:1

speed is inversely proportional to time for a given distance

therefore

time upstream: time downstream =1:2

let speed upstream=x

speed downstream =2x

speed in still water =1/2(x+2x)=3x/2

3x/2=6

x=4

speed upstream =4km/h

speed downstream =2x=8km/h

rate of stream =1/2(8-4)=2km/h

HOPE IT HELPS....

Otras preguntas