A man can row with a speed of 30 kmph in still water. If the stream flows at 10 kmph, then the speed in downstream is?
Pick:	A) 40	B) 27	C) 20	D) 99	E) 2
M = 30   S = 10   DS = 30 + 10= 
<gadget id="calculator">30 + 10</gadget>
<output>40</output>
40   40nswer:40
<result>A</result>
A man can row with a speed of 30 kmph in still water. If the stream flows at 10 kmph, then the speed in downstream is?