It is currently 15 Nov 2018, 02:18
My Tests

Close

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

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

20 students from Mrs. Peterson’s English class take her fina

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
Joined: 20 May 2014
Posts: 282
Followers: 14

Kudos [?]: 49 [0], given: 220

CAT Tests
20 students from Mrs. Peterson’s English class take her fina [#permalink] New post 15 Oct 2017, 22:55
00:00

Question Stats:

100% (00:30) correct 0% (00:00) wrong based on 2 sessions
20 students from Mrs. Peterson’s English class take her final, and score an average of 75 points. Mr. Chang, who is known for administering far easier tests, has 30 students, and they score an average of 95 points. If we combine the tests from the two classes what is the average score?

(A) 82

(B) 85

(C) 87

(D) 90

(E) Cannot be determined from information given.


Kudos for correct solution.
[Reveal] Spoiler: OA
Director
Director
Joined: 03 Sep 2017
Posts: 521
Followers: 1

Kudos [?]: 327 [0], given: 66

Re: 20 students from Mrs. Peterson’s English class take her fina [#permalink] New post 15 Oct 2017, 23:36
This is a weighted average, where the weights are the number of students. Thus, the computations are \(\frac{20*75+30*90}{50} = 87\). Answer C
Re: 20 students from Mrs. Peterson’s English class take her fina   [#permalink] 15 Oct 2017, 23:36
Display posts from previous: Sort by

20 students from Mrs. Peterson’s English class take her fina

  Question banks Downloads My Bookmarks Reviews Important topics  


GRE Prep Club Forum Home| About| Terms and Conditions and Privacy Policy| GRE Prep Club Rules| Contact

Powered by phpBB © phpBB Group

Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.