Question

A boat covers a distance of 66 km, downstream in 110 minutes. If speed of boat
in still water is 34.5 km/hr, find the speed of the stream.​

Answer 1

Answer:

1.5

Step-by-step explanation:

let the stream speed be X

now distance covered = 66km

time taken to cover that distance= 110mins=11/6 hours

since the boat is travelling downstream the effective velocity of the boat = 34.5+X kmph

we know that distance = (speed)*(time)

applying that:-

66=(34.5+X)*(11/6)

on simplification,

X=1.5 kmph