Question

19. A boat takes 4 hr upstream and 2 hr down the
stream for covering the same distance. The
ratio of velocity of boat to the water in river is
1) 1:3 2) 3:1 3) 1:13 4) V3:1​

Answer 1

Answer:

1:3

Explanation:

Then ,

speed downstrem = x+ y Km/hr

Speed Upstream = x - y Km/hr

hence ,

x-y= 4 ...............................(1)

x+y=2

therefore x=2-y

substituting in equation one

we get x= 3 and y=1

hence

ratio= velocity of boat/velocity of water

=3/1

so,1:3