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

It is currently 10 Dec 2018, 05:06

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
Events & Promotions in December
PrevNext
SuMoTuWeThFrSa
2526272829301
2345678
9101112131415
16171819202122
23242526272829
303112345
Open Detailed Calendar
  • Free lesson on number properties

     December 10, 2018

     December 10, 2018

     10:00 PM PST

     11:00 PM PST

    Practice the one most important Quant section - Integer properties, and rapidly improve your skills.
  • Free GMAT Prep Hour

     December 11, 2018

     December 11, 2018

     09:00 PM EST

     10:00 PM EST

    Strategies and techniques for approaching featured GMAT topics. December 11 at 9 PM EST.

If two projectiles are launched at the same moment from 1320 miles apa

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

Hide Tags

BSchool Thread Master
avatar
Joined: 19 Feb 2010
Posts: 347
If two projectiles are launched at the same moment from 1320 miles apa  [#permalink]

Show Tags

New post 16 Sep 2010, 06:22
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

83% (02:07) correct 17% (01:52) wrong based on 74 sessions

HideShow timer Statistics

If two projectiles are launched at the same moment from 1320 miles apart and travel directly towards each other at 480 miles per hour and 510 miles per hour, respectively, how many minutes will it take for them to meet?

A. 40
B. 44
C. 80
D. 88
E. 90
Intern
Intern
avatar
Joined: 18 Jul 2010
Posts: 44
Re: If two projectiles are launched at the same moment from 1320 miles apa  [#permalink]

Show Tags

New post 16 Sep 2010, 06:33
480 miles for A in one hour so 160 miles in 20 minutes
510 miles for B in one hour so 170 miles in 20 minutes


480 + 510 = 990
160 + 170 = 330

990 + 330 = 1320 ----> ANS : C
Manager
Manager
avatar
Joined: 11 Jul 2010
Posts: 196
GMAT ToolKit User
Re: If two projectiles are launched at the same moment from 1320 miles apa  [#permalink]

Show Tags

New post 16 Sep 2010, 06:33
C

80 min

480t + 510t = 1320

t = 44/33 = 4/3 hr = 80 mins...
Intern
Intern
avatar
B
Joined: 28 Feb 2018
Posts: 7
Re: If two projectiles are launched at the same moment from 1320 miles apa  [#permalink]

Show Tags

New post 09 Mar 2018, 07:17
alexn49 wrote:
480 miles for A in one hour so 160 miles in 20 minutes
510 miles for B in one hour so 170 miles in 20 minutes


480 + 510 = 990
160 + 170 = 330

990 + 330 = 1320 ----> ANS : C


S = D/T

Speed will be combined as both the objects are approaching towards each other, Therefore
S = 480 m/h + 510 m/hr = 990 m/hr = 990/60 m/min (conver it min coz answer required in min)
D = Distance between two objects = 1320
T = D/T = 1320/(990/60) = 1320/(33/2) = 1320*2/33 = 240/3 = 80

Thanks :thumbup:
GMAT Club Bot
Re: If two projectiles are launched at the same moment from 1320 miles apa &nbs [#permalink] 09 Mar 2018, 07:17
Display posts from previous: Sort by

If two projectiles are launched at the same moment from 1320 miles apa

  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®.