Events & Promotions
|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
May 2008:00 AM PDT
-08:30 AM PDT
What’s in it for you- Live Profile Evaluation Chat Session with Jenifer Turtschanow, CEO, ARINGO. Come with your details prepared and ARINGO will share insights! Pre-MBA Role/Industry, YOE, Exam Score, C/GPA, ECs Post-MBA Role/ Industry & School List.
May 1501:00 PM IST
-11:00 AM IST
Start your journey with a fully customized action plan and work with a dedicated mentor to achieve a 735+ score.
May 1912:00 PM PDT
-01:00 PM PDT
Scoring 329 on the GRE is not always about using more books, more courses, or a longer study plan. In this episode of GRE Success Talks, Ashutosh shares his GRE preparation strategy, study plan, and test-day experience, explaining how he kept his prep....- Jun 10
06:00 AM PDT
-06:15 PM PDT
Register for the GMAT Club Virtual MBA Spotlight Fair – the world’s premier event for serious MBA candidates. This is your chance to hear directly from Admissions Directors at nearly every Top 30 MBA program..
23 Oct 2018, 21:59
Kudos
Bookmarks
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
88% (00:45) correct
13%
(01:03)
wrong
based on 86
sessions
History
Date
Time
Result
Not Attempted Yet
In a certain class, x students are 10 years old, and the remaining y students are 11 years old. What is the average (arithmetic mean) age of all students in the class?
A. \(\frac{x+y}{21}\)
B. \(\frac{10x+11y}{21}\)
C. \(\frac{110xy}{x+y}\)
D. \(\frac{110xy}{xy}\)
E. \(\frac{10x+11y}{x+y}\)
A. \(\frac{x+y}{21}\)
B. \(\frac{10x+11y}{21}\)
C. \(\frac{110xy}{x+y}\)
D. \(\frac{110xy}{xy}\)
E. \(\frac{10x+11y}{x+y}\)
eswarchethu135
23 Oct 2018, 22:58
Kudos
Bookmarks
Total number of students is x+y
No if students of 10 years old is x. So total age of x students is 10x
No if students of 11 years old is y. So total age of y students is 11y.
Now average is \(\frac{10x+11y}{x+y}\)
No if students of 10 years old is x. So total age of x students is 10x
No if students of 11 years old is y. So total age of y students is 11y.
Now average is \(\frac{10x+11y}{x+y}\)
23 Oct 2018, 23:21
Kudos
Bookmarks
Bunuel
\(Average \ Age = \frac{Total \ Age \ of \ x \ students + Total \ Age \ of \ y \ students}{Total \ No \ of \ Students}\)
\(Average \ Age = \frac{10x + 11y}{(x + y )}\); Answer must be (E)
