A man swims 12 km downstream and 10 km upstream. If he takes 2 hours each time, what is the speed of the stream?

Question	A man swims 12 km downstream and 10 km upstream. If he takes 2 hours each time, what is the speed of the stream?
Type	multiple_choice
Option	1 km/hr	incorrect
Option	0.5 km/hr	correct
Option	1.5 km/hr	incorrect
Option	0.7 km/hr	incorrect

Speed downstream =  Distance/time = 12/2 = 6 km/hr

Speed downstream = Distance/time = 10/2 = 5 km/hr

Apply formula: Speed of stream =  1/2  (speed downstream – speed upstream)

X = 6 km/hr

Y= 5 km/hr

∴ Required speed =   1/2 (6 -5) km/hr =   ∗ 1= 0.5 km/hr