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?
Choose one
A) 87  B) 56  C) 20  D) 67  E) 97
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?