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?
Choose the correct choice from the following:
A) 1.7	B) 1.4	C) 1.1	D) 1.5	E) 1

Rationale: "m = 3 s = x ds = 3 + x us = 3 + x 3 + x = ( 3 - x ) 2 3 + x = 6 - 2 x 3 x = 3 x = 1 answer : e"
Answer: E