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

It is currently 23 Apr 2019, 03:48

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

There are two cars. One is 200 miles north of the other. Simultaneousl

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

Hide Tags

 
Intern
Intern
User avatar
Joined: 05 Mar 2015
Posts: 28
Location: United States
Concentration: Marketing, General Management
There are two cars. One is 200 miles north of the other. Simultaneousl  [#permalink]

Show Tags

New post 26 Apr 2015, 09:56
1
6
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

73% (02:18) correct 27% (02:17) wrong based on 180 sessions

HideShow timer Statistics

There are two cars. One is 200 miles north of the other. Simultaneously, the car to the north is driven westward at 20 miles per hour and the other car is driven eastward at 30 miles per hour. How many miles apart are the cars after 3 hours?


A. 225
B. 250
C. 275
D. 300
E. 350

_________________
"You have to learn the rules of the game. And then you have to play better than anyone else". Albert Einstein
Director
Director
User avatar
Joined: 07 Aug 2011
Posts: 523
Concentration: International Business, Technology
GMAT 1: 630 Q49 V27
GMAT ToolKit User
Re: There are two cars. One is 200 miles north of the other. Simultaneousl  [#permalink]

Show Tags

New post 26 Apr 2015, 10:52
3
Answer B
Attachments

Screenshots_2015-04-26-23-20-30.png
Screenshots_2015-04-26-23-20-30.png [ 525.73 KiB | Viewed 2598 times ]

EMPOWERgmat Instructor
User avatar
V
Status: GMAT Assassin/Co-Founder
Affiliations: EMPOWERgmat
Joined: 19 Dec 2014
Posts: 13961
Location: United States (CA)
GMAT 1: 800 Q51 V49
GRE 1: Q170 V170
Re: There are two cars. One is 200 miles north of the other. Simultaneousl  [#permalink]

Show Tags

New post 26 Apr 2015, 12:27
Hi NYCgirl15,

GMAT question writers often 'hide' established math 'patterns' into questions, so learning to spot those patterns can create some really nice short-cuts for you on Test Day.

Here, drawing a quick sketch of the 'actions' described will end in a diagonal line that you can "build" a right triangle around:

The right triangle will have a base of 150 and a height of 200. The hidden pattern here is a 3/4/5 right triangle (the 150 lines up with the '3' and the 200 lines up with the '4'). In this way, you can deduce that each side is '50 times' bigger than it's corresponding side:

3/4/5 becomes
150/200/250

Thus the distance between the two cars is the length of the hypotenuse of this larger right triangle...

Final Answer:

GMAT assassins aren't born, they're made,
Rich
_________________
760+: Learn What GMAT Assassins Do to Score at the Highest Levels
Contact Rich at: Rich.C@empowergmat.com

*****Select EMPOWERgmat Courses now include ALL 6 Official GMAC CATs!*****

Rich Cohen

Co-Founder & GMAT Assassin

Special Offer: Save $75 + GMAT Club Tests Free
  Official GMAT Exam Packs + 70 Pt. Improvement Guarantee
www.empowergmat.com/
Intern
Intern
avatar
Status: GMAT...Not Again.....
Joined: 19 Oct 2015
Posts: 29
Location: India
Concentration: Strategy, Entrepreneurship
GMAT 1: 610 Q48 V27
WE: Engineering (Energy and Utilities)
Re: There are two cars. One is 200 miles north of the other. Simultaneousl  [#permalink]

Show Tags

New post 24 Oct 2015, 22:13
yes.. made 2 right triangles n then found 2 hypotenus n added it... got 350 :?
should've got 3-4-5 triangle property
_________________
correct if wrong, and a +1 wont hurt for like :wink:

Keep Faith in God Coz Every Question cannot be answered by Google
EMPOWERgmat Instructor
User avatar
V
Status: GMAT Assassin/Co-Founder
Affiliations: EMPOWERgmat
Joined: 19 Dec 2014
Posts: 13961
Location: United States (CA)
GMAT 1: 800 Q51 V49
GRE 1: Q170 V170
Re: There are two cars. One is 200 miles north of the other. Simultaneousl  [#permalink]

Show Tags

New post 25 Oct 2015, 12:24
Hi Dabhishek,

It's common to make mistakes during your training (that's one of the reasons why you train - to define your 'weak spots' and improve), so you shouldn't get too down on yourself. To properly improve though, you really have to be diligent with your review. With each question that you get wrong (especially if you get them wrong because of silly/little mistakes), you should redo the question from scratch. Do all of the work on the pad and repeat all of the steps. There's a 'mechanical' aspect to working through questions that many Test Takers do not account for. You can build your skills, knowledge, Tactics AND mechanics all at the same time, if you choose to.

GMAT assassins aren't born, they're made,
Rich
_________________
760+: Learn What GMAT Assassins Do to Score at the Highest Levels
Contact Rich at: Rich.C@empowergmat.com

*****Select EMPOWERgmat Courses now include ALL 6 Official GMAC CATs!*****

Rich Cohen

Co-Founder & GMAT Assassin

Special Offer: Save $75 + GMAT Club Tests Free
  Official GMAT Exam Packs + 70 Pt. Improvement Guarantee
www.empowergmat.com/
CEO
CEO
User avatar
P
Joined: 18 Aug 2017
Posts: 3028
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
GMAT ToolKit User Premium Member CAT Tests
Re: There are two cars. One is 200 miles north of the other. Simultaneousl  [#permalink]

Show Tags

New post 07 Apr 2019, 23:59
NYCgirl15 wrote:
There are two cars. One is 200 miles north of the other. Simultaneously, the car to the north is driven westward at 20 miles per hour and the other car is driven eastward at 30 miles per hour. How many miles apart are the cars after 3 hours?


A. 225
B. 250
C. 275
D. 300
E. 350



draw figure we get a rectangle figure
width = 200 and length = 150
diagonal = (200)^2+ (150)^2 ; 62500 = 250
IMO B
_________________
If you liked my solution then please give Kudos. Kudos encourage active discussions.
GMAT Club Bot
Re: There are two cars. One is 200 miles north of the other. Simultaneousl   [#permalink] 07 Apr 2019, 23:59
Display posts from previous: Sort by

There are two cars. One is 200 miles north of the other. Simultaneousl

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


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

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

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.