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S1: x=1.04y insuff, since we do not know y S2: 0.04y=1020 again insuff 'cause we do not know the relationship bet. y and x Together: can find y and therefore x
this is exactly what Kaplan says, but I do not agree with that. choice 2 gives "Country X increased by $1,020" which is amount of increase. I could not calculate the median household amount using information provided. Can you shed more light n this?
Re: D/S tricky one from Kaplan's Quiz [#permalink]
14 Jan 2007, 18:26
From January 1, 2002 to July 1, 2002, the median household income in Country X increased by 2%. What was the median household income in Country X on January 1, 2002?
(1) From July 1, 2001 to January 1, 2002, the median household income in Country X increased by 4%.
(2) From July 1, 2001 to January 1, 2002, the median household income in Country X increased by $1,020.
(1) Right away: not sufficient.
(2) Same as in (1).
(1&2) 1020 = 4%X, X = median household income in July 1, 2001. Thus, we are able to find X and Y = median household income in January 1, 2002. Therefore, we can solve the problem => C.
We donÂ´t make use of the "2% increase" data in this DS question.
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