- - - - -_14%_more_than_in_2007,_and_in - - - - ~ In 2008, Zinah earned 2009 Zinah earned 4% more than in 2008. If Zinah earned y times as much in 2009 as in 2007, what is the value of y?
Correct answer: D (parsed from the explanation — this source omits an answer key for this item)
Explanation
2008 14% 2007 Choice D is correct. It’s given that in Zinah earned more than in . 2007 Let h represent the amount Zinah earned in and let j represent the amount 2008 that Zinah earned in . This situation can be represented by the equation = 1+ 14 =1.14 2009 4% j b 100 lh, or j h. It’s also given that in Zinah earned more 2008 2009 than in . Let k represent the amount Zinah earned in . This situation can = 1+ 4 =1.04 1.14 be represented by the equation k b 100 lj, or k j. Substituting h for =1.04 = 1.04 1.14 =1.1856 j in the equation k j yields k ^ h^ hh, or k h. If Zinah 2009 2007 1.1856 earned y times as much in as in , then the value of y is . 40 SAT PRACTICE TEST #6 ANSWER EXPLANATIONS SAT ANSWER EXPLANATIONS n MATH: MODULE 1 Choice A is incorrect and may result from conceptual or calculation errors. Choice B is incorrect and may result from conceptual or calculation errors. Choice C is incorrect and may result from conceptual or calculation errors.
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