GMAT Question of the Day: Daily via email | Daily via Instagram New to GMAT Club? Watch this Video

It is currently 29 May 2020, 00:29

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.

Close

Request Expert Reply

Confirm Cancel

In isosceles triangle ABC, the degree measure of angle ABC is 30°, wha

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Find Similar Topics 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 64222
In isosceles triangle ABC, the degree measure of angle ABC is 30°, wha  [#permalink]

Show Tags

New post 23 May 2018, 05:47
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

60% (01:22) correct 40% (01:29) wrong based on 159 sessions

HideShow timer Statistics

GMAT Club Tests' Fresh Question:



In isosceles triangle ABC, the degree measure of angle ABC is 40°. What is the difference between the maximum possible degree measure of the largest angle in the triangle ABC and the minimum possible degree measure of the largest angle in the triangle ABC?


A) 0°
B) 15°
C) 30°
D) 40°
E) 60°

_________________
Board of Directors
User avatar
D
Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
Posts: 4989
Location: India
GPA: 3.5
WE: Business Development (Commercial Banking)
GMAT ToolKit User
Re: In isosceles triangle ABC, the degree measure of angle ABC is 30°, wha  [#permalink]

Show Tags

New post 23 May 2018, 07:39
1
Bunuel wrote:

GMAT Club Tests' Fresh Question:



In isosceles triangle ABC, the degree measure of angle ABC is 40°. What is the difference between the maximum possible degree measure of the largest angle in the triangle ABC and the minimum possible degree measure of the largest angle in the triangle ABC?


A) 0°
B) 15°
C) 30°
D) 40°
E) 60°


40° can either be the base angle / the apex angle

If 40° is base angles then Apex angle is 100° , thus difference will be 60°
If 40° is Apex angle then Base angles are 70° , thus difference will be 30°

Thus, he minimum possible degree measure of the largest angle in the triangle ABC will be C) 30°
_________________
Thanks and Regards

Abhishek....

PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS

How to use Search Function in GMAT Club | Rules for Posting in QA forum | Writing Mathematical Formulas |Rules for Posting in VA forum | Request Expert's Reply ( VA Forum Only )
e-GMAT Representative
User avatar
V
Joined: 04 Jan 2015
Posts: 3367
Re: In isosceles triangle ABC, the degree measure of angle ABC is 30°, wha  [#permalink]

Show Tags

New post 23 May 2018, 22:01

Solution



Given:
• In isosceles triangle ABD, the degree measure of angle ABC is 40°

To find:
• The difference between the maximum possible degree measure of the largest angle in the triangle ABC and the minimum possible degree measure of the largest angle in the triangle ABC

Approach and Working:
As there is no details provided about the angle ABC except the value, we can have 2 possible cases.

Case 1:
If angle ABC is one of the same angle in the base, then the 3 angles of triangle ABC are 40°, 40°, and 100°
    • Largest angle = 100°

Case 2:
If angle ABC is the vertex angle, then the 3 angles of triangle ABC are 40°, 70°, and 70°
    • Largest angle = 70°

Therefore the difference between the maximum largest angle and minimum largest angle = maximum possible largest angle – minimum possible largest angle = 100° - 70° = 30°

Hence, the correct answer is option C.

Answer: C
_________________
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 64222
Re: In isosceles triangle ABC, the degree measure of angle ABC is 30°, wha  [#permalink]

Show Tags

New post 24 Dec 2018, 03:47
Bunuel wrote:

GMAT Club Tests' Fresh Question:



In isosceles triangle ABC, the degree measure of angle ABC is 40°. What is the difference between the maximum possible degree measure of the largest angle in the triangle ABC and the minimum possible degree measure of the largest angle in the triangle ABC?


A) 0°
B) 15°
C) 30°
D) 40°
E) 60°


Par of GMAT CLUB'S New Year's Quantitative Challenge Set


_________________
Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 15011
Re: In isosceles triangle ABC, the degree measure of angle ABC is 30°, wha  [#permalink]

Show Tags

New post 04 May 2020, 07:33
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
GMAT Club Bot
Re: In isosceles triangle ABC, the degree measure of angle ABC is 30°, wha   [#permalink] 04 May 2020, 07:33

In isosceles triangle ABC, the degree measure of angle ABC is 30°, wha

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  





Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne