A man can row with a speed of 15 kmph in still water. If the stream flows at 5 kmph, then the speed in downstream is?
Select the correct option:
A) 77
B) 66
C) 20
D) 21
E) 24
M = 15   S = 5   DS = 15 + 5= 
<gadget id="calculator">15 + 5</gadget>
<output>20</output>
20   Answer: 20
<result>C</result>
A man can row with a speed of 15 kmph in still water. If the stream flows at 5 kmph, then the speed in downstream is?