Comments on: Quick GMAT Mental Math: Averages
http://www.knewton.com/blog/test-prep/quick-gmat-mental-math-averages/
Tue, 14 Apr 2015 19:37:41 +0000hourly1http://wordpress.org/?v=4.2.2By: sdfgsdg
http://www.knewton.com/blog/test-prep/quick-gmat-mental-math-averages/#comment-4558
Mon, 29 Oct 2012 06:53:00 +0000http://www.knewton.com/stage/?p=17753#comment-4558You are crazy! this method is slower and more confusing than simply solving for the quadratic equation…
]]>By: Pradebban
http://www.knewton.com/blog/test-prep/quick-gmat-mental-math-averages/#comment-3190
Fri, 14 Oct 2011 18:36:00 +0000http://www.knewton.com/stage/?p=17753#comment-3190Ada and Paul received their scores on three tests. On the first test, Ada’s score was 10 points higher than Paul’s score. On the second test, Ada’s score was 4 points higher than Paul’s score. If Paul’s average (arithmetic mean) score on the three tests was 3 points higher than Ada’s average score on the three tests, then Paul’s score on the third test was how many points higher than Ada’s score?
A) 9 B) 14 C) 17 D) 23 E) 25IMO: 25
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