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## GMAT Practice Question Set #1 (Question 1-3)

GMAT Integrated Reasoning  >  Two-Part Analysis Question # 1: Number of Computer Science Teachers
 Time 0 0 : 0 0 : 0 0 Between 2008 and 2012, the number of computer science teachers decreased despite a jump in computer science majors from 400 in 2008.
In the given expressions, T and S represent the percent change in the number of teachers and computer science students, respectively, over the four years and R represents the the number of computer science students per teacher in 2008.
Percent change in a quantity X is calculated using the formula
((X_(recent)- X_(old) ) / X_(old)) * 100.
Select the expression that represents the number of teachers in 2012 and select the expression that represents the number of computer science students per teacher in 2012.  # of Teachers in 2012 # of Computer Science Students per Teacher in 2012  (400/R)((100-T)/100)  R((100 + S) / (100 + T))  1/R  R((100-T)/(100+S))  400/R ((100+T) / 100)   ## Video Explanation Part 3 of 3: Summarizing It All Up

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