A man swims downstream 96 km and upstream 64 km taking 4 hours each time; what is the speed of the current?	Choose the correct choice from the following choices
A) 6
B) 4
C) 2
D) 8
E) 5
96 --- 4 DS = 24   ? ---- 1   64 ---- 4 US = 16   ? ---- 1 S = ?   S = (24 - 16)/2= 
<gadget id="calculator">(24 - 16)/2</gadget>
<output>4</output>
4   Answer: 4
<result>B</result>
A man swims downstream 96 km and upstream 64 km taking 4 hours each time; what is the speed of the current?