Two measuring scales R and S. When R is 6, S is 30 ; when R is 24, S is 60. How much is R when S is 100?
This is an absurd question. First of all, there is no reason or justification to assume, based on the wording of the problem, that any relationship exists whatsoever between R and S. For all we know, these could be random numbers.
Even if we assume that there is, in fact, some relationship between R and S, there are an INFINITE number of equations that can relate R and S based on a sample set of TWO and no reason or justification to assume that the relationship is linear.
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993