A man can row with a speed of 15 kmph in still water. If the stream flows at 4 kmph, then the speed in downstream is?  Choices
A) 33
B) 77
C) 20
D) 19
E) 71
M = 15   S = 4   19S = 15 + 4= 
<gadget id="calculator">15 + 4</gadget>
<output>19</output>
19   Answer: 19
<result>D</result>
A man can row with a speed of 15 kmph in still water. If the stream flows at 4 kmph, then the speed in downstream is?