A man swims downstream 76 km and upstream 48 km taking 4 hours each time; what is the speed of the current?	Choose the correct choice from the following answers.
A) 3 kmph B) 1.5 kmph C) 3.5 kmph D) 6.5 kmph E) 7:3kmph
Explanation:   76 --- 4 DS = 19   ? ---- 1   48 ---- 4 US = 12   ? ---- 1 S = ?   S = (19 - 12)/2= 
<gadget id="calculator">(19 - 12)/2</gadget>
<output>7/2 = around 3.5</output>
3.5   Answer: Option 3.5 kmph
<result>C</result>
A man swims downstream 76 km and upstream 48 km taking 4 hours each time; what is the speed of the current?