A man swims downstream 48 km and upstream 32 km taking 8 hours each time; what is the speed of the current?
Answers.
A) 1
B) 2
C) 3
D) 4
E) 5
48 --- 8 DS = 6   ? ---- 1   32 ---- 8 US = 4   ? ---- 1 S = ?   S = (6- 4)/2= 
<gadget id="calculator">(6- 4)/2</gadget>
<output>1</output>
1   1nswer: 1
<result>A</result>
A man swims downstream 48 km and upstream 32 km taking 8 hours each time; what is the speed of the current?