Question

the speed of a boat upstream is12km/h, if it can travel a distance of 42 km down stream in 3hour then the speed of the current is​

Answer 1

Answer:

speed of current 1 km/hr

Step-by-step explanation:

Given,

the speed of a boat upstream is 12 km/h

m-s=12                -------(1)

if it can travel a distance of 42 km down stream in 3 hour

we know Speed=Distance/time

m+s=42/3

m+s=14             -------(1)

by solving (1) and (2) we get,

m=13 km/hr

s=1 km/hr