{"id":22881,"date":"2014-02-13T07:00:09","date_gmt":"2014-02-13T14:00:09","guid":{"rendered":"https:\/\/gmatclub.com\/blog\/2014\/02\/gmat-question-of-the-week-data-sufficiency-and-averages-the-explanation-2\/"},"modified":"2014-02-13T07:00:09","modified_gmt":"2014-02-13T14:00:09","slug":"gmat-question-of-the-week-data-sufficiency-and-averages-the-explanation-2","status":"publish","type":"post","link":"https:\/\/gmatclub.com\/blog\/gmat-question-of-the-week-data-sufficiency-and-averages-the-explanation-2\/","title":{"rendered":"GMAT Question of the Week: Data Sufficiency and Averages \u2013 The Explanation"},"content":{"rendered":"
\n\t\t\"GMAT<\/a>\n\t\t<\/div>\n

\n\t\t\"GMAT<\/a>If you haven't already, visit our GMAT\u00a0Data Sufficiency and Averages practice problem<\/a> and give it a try on your own before reading the explanation.<\/p>\n

To get this question correct, you must combine your knowledge of fundamental math concepts with use of the Kaplan Method<\/a> and strategies for approaching Data Sufficiency and Averages. Here\u2019s a breakdown:<\/p>\n

The average formula is<\/p>\n

\"\"<\/a><\/p>\n

 <\/p>\n

The average of m<\/i> and n<\/i> is \u00a0\"\"<\/a><\/p>\n

 <\/p>\n

The question stem asks \u00a0\u201cIs \u00a0\"\"<\/a>?\u201d<\/p>\n

 <\/p>\n

Remember, with a Yes\/No Data Sufficiency<\/b> question, you are looking at the statements and trying to determine whether they provide a consistent<\/i><\/b> YES or NO answer to this question. A consistent answer of yes OR no is sufficient. An inconsistent answer (yes and<\/em> no) is insufficient.<\/p>\n

 <\/p>\n

Statement (1): Sufficient.<\/b> This statement says that \"\"<\/a><\/p>\n

Pull the 3 out of the numerator to get \u00a0\"\"<\/a><\/p>\n

Multiply both sides by 2 to get \u00a0\"\"<\/a><\/p>\n

Then divide both sides by 3 to get \u00a0\"\"<\/a><\/p>\n

So, the average of m<\/i> and n<\/i> is \u00a0\u00a0\"\"<\/a>.<\/p>\n

The average of m<\/i> and n<\/i> is definitely less than 50<\/strong>, and the answer to the question in the stem is always \u201cyes.\u201d Statement (1) is sufficient<\/strong>, so you can eliminate (B), (C), and (E).<\/p>\n

Statement (2): Insufficient.<\/b> This does not allow us to determine the average of m and n, because it does not give us the values or the right relationship between m and n. Eliminate (D).<\/p>\n

Answer choice (A) is correct.<\/p>\n

 <\/p>\n

The post GMAT Question of the Week: Data Sufficiency and Averages – The Explanation<\/a> appeared first on Kaplan GMAT Blog<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

If you haven’t already, visit our GMAT\u00a0Data Sufficiency and Averages practice problem and give it a try on your own before reading the explanation. To get this question correct, you…<\/p>\n","protected":false},"author":120,"featured_media":0,"comment_status":"closed","ping_status":"1","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,558,243,940],"tags":[],"class_list":["post-22881","post","type-post","status-publish","format-standard","hentry","category-gmat","category-kaplan-blog","category-blog","category-gmat-prep-gmat","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/posts\/22881","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/users\/120"}],"replies":[{"embeddable":true,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/comments?post=22881"}],"version-history":[{"count":0,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/posts\/22881\/revisions"}],"wp:attachment":[{"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/media?parent=22881"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/categories?post=22881"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/tags?post=22881"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}