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100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## The ratio of R to S is 3 to 5, what ........ tagged by: Vincen ##### This topic has 1 expert reply and 0 member replies ## The ratio of R to S is 3 to 5, what ........ The ratio of R to S is 3 to 5, what is the value of the ratio (R + K)/(S + K)? (1) R = 12 (2) K = 7 The OA is the option C. How can I get the correct answer using both statements? Experts, may you help me? Thanks in advanced. ### GMAT/MBA Expert Legendary Member Joined 14 Jan 2015 Posted: 2667 messages Followed by: 122 members Upvotes: 1153 GMAT Score: 770 Top Reply Vincen wrote: The ratio of R to S is 3 to 5, what is the value of the ratio (R + K)/(S + K)? (1) R = 12 (2) K = 7 The OA is the option C. How can I get the correct answer using both statements? Experts, may you help me? Thanks in advanced. Rephrase the original question. If R/S = 3/5, then S/R = 5/3 and S = (5/3)R. Replace S with (5/3)R in the original expression to get our new question: What is the value of (R + K)/((5/3)R + K)? Statement 1: nothing about K. Not sufficient. Statement 2: nothing about R; Not sufficient. Together. We're looking for (R + K)/((5/3)R + K); Clearly, if we have values for R and K, we can just plug those values into the expression, and we have a unique value: (12 + 7)/((5/3)12 + 7) Together the statements are sufficient. The answer is C _________________ Veritas Prep | GMAT Instructor Veritas Prep Reviews Save$100 off any live Veritas Prep GMAT Course

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