Must Read GMAT Articles:GMAT Study Plan: The Best Way to Study for the GMAT How to Study for the GMAT While Working How to Score High on GMAT Verbal




You are watching: If x and y are positive integers what is the value of xy

*


*

Re: If x and y are positive integers, what is the value of xy?<#permalink>
*
05 Oct 2020, 09:44
Forget the traditional way to deal with DS concerns.We will certainly settle this DS question utilizing the variable technique.DS question with 2 variables: Let the original condition in a DS question contain 2 variables. Now, 2 variables would mostly call for 2 equation for us to have the ability to deal with for the worth of the variable. We recognize that each condition would commonly provide us an equation, and Since we need 2 equations to complement the numbers of variables and also equations in the original problem, the logical answer is C. To understand the Variable Approach, visit https://www.mathrdevelopment.com and also check our lessons and prcooktop approaches to score high in DS inquiries.Let’s apply the 3 procedures said formerly. Step 1 of the Variable Approach: Modifying and rechecking the original condition and the question. We need to find the worth of "xy".=> Given that "x" and "y" are positive integersSecond and the third action of Variable Approach: From the original condition, we have actually 2 variables (x and y).To enhance the variety of variables via the variety of equations, we need 2 equations. Since conditions (1) and (2) will certainly administer 2 equations, C would certainly many likely be the answer.Let’s take look at both problems together.Condition(1) tells us that the best common variable of x and also y is 10 .Condition(2) tells us that The least prevalent multiple of x and also y is 180 .=> Product of numbers = product of their GCF and also LCM=> xy = 180 * 10 = 1800Because the answer is distinct, both problems combined together are sufficient by CMT 2. Both problems combined together are sufficient.So, C is the correct answer.Answer: C_________________


See more: Late Night With Seth Meyers Boston Accent ” Trailer On Late Night

*
MathRevolution: The World"s Most "Complete" GMAT Math Course!Score a great Q49-51 simply like 70% of our students. On-demand trial course (7 days) - 100 hours of video lessons, 490 leskid topics, and 2,000 questions. Starting at $79 for on-demand also and $60 for tutoring per hour and also $390 only for Live Online