GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 18 Oct 2019, 22:40

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

If the length of 2 sides of a triangle is 7 and 12 units. Which of the

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

Hide Tags

Find Similar Topics 
Senior Manager
Senior Manager
User avatar
V
Joined: 25 Dec 2018
Posts: 487
Location: India
Concentration: General Management, Finance
GMAT Date: 02-18-2019
GPA: 3.4
WE: Engineering (Consulting)
CAT Tests
If the length of 2 sides of a triangle is 7 and 12 units. Which of the  [#permalink]

Show Tags

New post 14 Apr 2019, 06:11
1
2
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

74% (01:06) correct 26% (01:22) wrong based on 38 sessions

HideShow timer Statistics

If the length of 2 sides of a triangle is 7 and 12 units. Which of the following could be the perimeter of the triangle?

A. 24
B. 28
C. 38
D. 40
E. 42
NUS School Moderator
avatar
V
Joined: 18 Jul 2018
Posts: 1020
Location: India
Concentration: Finance, Marketing
WE: Engineering (Energy and Utilities)
Reviews Badge
Re: If the length of 2 sides of a triangle is 7 and 12 units. Which of the  [#permalink]

Show Tags

New post 14 Apr 2019, 10:45
2
In any triangle, The third side should always be greater than the difference between the two sides and less than the sum of the other two sides.

12-7 < x < 19
5 < x < 19

perimeter = 7+12+x = 19+x
Only possible value is 9. 19+9 = 28.
Satisfies the condition.

B is the answer.
_________________
Press +1 Kudos If my post helps!
Intern
Intern
User avatar
B
Joined: 15 Apr 2015
Posts: 3
Re: If the length of 2 sides of a triangle is 7 and 12 units. Which of the  [#permalink]

Show Tags

New post 15 Apr 2019, 06:08
Chethan92 wrote:
In any triangle, The third side should always be greater than the difference between the two sides and less than the sum of the other two sides.

12-7 < x < 19
5 < x < 19

perimeter = 7+12+x = 19+x
Only possible value is 9. 19+9 = 28.
Satisfies the condition.

B is the answer.



How can we say that only 9 could be the possible value. It could be anything between 6-18?
_________________
Thanks,
Bhavana
Intern
Intern
User avatar
B
Joined: 23 Feb 2018
Posts: 13
Re: If the length of 2 sides of a triangle is 7 and 12 units. Which of the  [#permalink]

Show Tags

New post 15 Apr 2019, 06:35
1
bhavana31 wrote:
Chethan92 wrote:
In any triangle, The third side should always be greater than the difference between the two sides and less than the sum of the other two sides.

12-7 < x < 19
5 < x < 19

perimeter = 7+12+x = 19+x
Only possible value is 9. 19+9 = 28.
Satisfies the condition.

B is the answer.



How can we say that only 9 could be the possible value. It could be anything between 6-18?








Since x can be anything from 6 to 18 we will check with the options.
1st go with the extreme values
let x= 6, so the perimeter will be 7+12+6= 25, so we cross out option A
Next let x = 18, 7+12+18= 37, cross out option C,D,E . hence we are left with option B.
I hope this made it easy for you to understand. :blushing
_________________
Patience and hardwork will pay! Have faith in yourself.
Board of Directors
User avatar
D
Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
Posts: 4772
Location: India
GPA: 3.5
WE: Business Development (Commercial Banking)
GMAT ToolKit User
Re: If the length of 2 sides of a triangle is 7 and 12 units. Which of the  [#permalink]

Show Tags

New post 15 Apr 2019, 07:58
1
bhavana31 wrote:
Chethan92 wrote:
In any triangle, The third side should always be greater than the difference between the two sides and less than the sum of the other two sides.

12-7 < x < 19
5 < x < 19

perimeter = 7+12+x = 19+x
Only possible value is 9. 19+9 = 28.
Satisfies the condition.

B is the answer.



How can we say that only 9 could be the possible value. It could be anything between 6-18?

Absolutely correct we need to find data within the given range, so the Min and Max possible value of perimeter must be

Min : 12+7+6 = 25
Max : 12+7+18 = 37

Now check the given options, only option (B) falls within the given range, thus our Answer must be (B)
_________________
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 )
GMAT Club Bot
Re: If the length of 2 sides of a triangle is 7 and 12 units. Which of the   [#permalink] 15 Apr 2019, 07:58
Display posts from previous: Sort by

If the length of 2 sides of a triangle is 7 and 12 units. Which of the

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





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