Question

A man rows upstream 13 km and downstream 28 km, taking 5 hours each time. Find the velocity
of the current.
(a) 24 km/hr
(b) 2 km/hr
(c) 1.5 km/hr
(d)3km/hr

only detailed answer qualifies.​

Answer 1

Step-by-step explanation:

Speed upstream ‘b’ = 13km/ 5 hr

Speed downstream ‘a’ = 28/5 km/hr

Velocity of the stream = ½ (a-b)

= ½ (28/5 – 13/5)

= ½ (15/5)

= 3/2

velocity of the stream = 1.5 km/ hr