Last visit was: 14 Jul 2024, 09:19 It is currently 14 Jul 2024, 09:19
Toolkit
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

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.

# Gina and Tina's average grade is 23 points higher than Tina's grade.

SORT BY:
Tags:
Show Tags
Hide Tags
Math Expert
Joined: 02 Sep 2009
Posts: 94342
Own Kudos [?]: 640736 [1]
Given Kudos: 85011
Retired Moderator
Joined: 26 Nov 2012
Posts: 473
Own Kudos [?]: 497 [0]
Given Kudos: 46
Alum
Joined: 12 Aug 2015
Posts: 2272
Own Kudos [?]: 3195 [0]
Given Kudos: 893
GRE 1: Q169 V154
Target Test Prep Representative
Joined: 04 Mar 2011
Affiliations: Target Test Prep
Posts: 3037
Own Kudos [?]: 6562 [0]
Given Kudos: 1646
Bunuel wrote:
Gina and Tina's average grade is 23 points higher than Tina's grade. What is the difference between their grades?

A. 46.
B. 23.
C. 16.
D. 15.
E. 11.5.

We can let Gina and Tina’s average grade = (g + t)/2. Since Gina and Tina's average grade is 23 points higher than Tina's grade:

(g + t)/2 = 23 + t

g + t = 46 + 2t

g = 46 + t

g - t = 46