A man can swim in still water at 3 km/h, but takes twice as long to swim upstream than downstream. The speed of the stream is?  Select the correct option:
A) 1.7	B) 1.4	C) 1.1	D) 1.5	E) 1
M = 3   S = x   DS = 3 + x   US = 3 + x   3 + x = (3 - x)2   3 + x = 6 -2x   3x = 3   x = 1   Answer:1
<result>E</result>
A man can swim in still water at 3 km/h, but takes twice as long to swim upstream than downstream. The speed of the stream is?