Question

A man rows a certain distance along the stream and Against the stream in 1 hour and 1.5 hours respectively. If the velocity of the current is 3km/hr.what is the speed of a man in still water?​

Answer 1

Answer:

15

Step-by-step explanation:

let speed of man in still water be 'x'

Sd = x + 3 ,Su = x - 3

distance is same

(x+3)×1 = (x-3) × 1.5

x + 3 = 1.5x - 4.5

0.5x = 7.5 => x = 15km/hr