Question

A boatman rows downstream a distance of 30 km in 6 hours and upstream a distance of 24 km in 6 hours. The ratio of speed of boat in still water and speed of current is

Answer 1

Answer:

9

Step-by-step explanation:

Let speed of stream be x

Let speed of boat in still water be y

So speed in downstream isy+x

And speed in upstrem will be y-x

6=30/(y+x)...i

6=24/(y-x)...ii

From i and ii

Y=4.5 and x=0.5 y/x=9

Note: the ans is valid only when boatman row the boat with constant speed in his entire journey