A man can row with a speed of 20 kmph in still water. If the stream flows at 10 kmph, then the speed in downstream is?	Choose the correct choice from the following: A) 29 B) 378 C) 20 D) 30 E) 121
M = 20   S = 10   30S = 20 + 10= 
<gadget id="calculator">20 + 10</gadget>
<output>30</output>
30   Answer: 30
<result>D</result>
A man can row with a speed of 20 kmph in still water. If the stream flows at 10 kmph, then the speed in downstream is?