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

 It is currently 08 Dec 2019, 00:24

### 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

# The distance between West-Town to East-Town is 15 kilometers. Two bird

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 59588
The distance between West-Town to East-Town is 15 kilometers. Two bird  [#permalink]

### Show Tags

04 Jul 2016, 08:57
00:00

Difficulty:

15% (low)

Question Stats:

79% (01:34) correct 21% (01:37) wrong based on 81 sessions

### HideShow timer Statistics

The distance between West-Town to East-Town is 15 kilometers. Two birds start flying simultaneously towards one another, the first leaving from West-Town at a speed of 4 kilometers per minute and the second bird, leaving from East-Town, at a speed of 1 kilometers per minute. What will be the distance, in kilometers, between the meeting point and West-Town?

A. 3.
B. 7.
C. 10.
D. 12.
E. 15.

_________________
Current Student
Joined: 22 Jun 2016
Posts: 223
The distance between West-Town to East-Town is 15 kilometers. Two bird  [#permalink]

### Show Tags

04 Jul 2016, 11:00
By end of 1st min: distance covered by 1st bird is 4 km and 2nd is 1 km. Total distance = 5km.
By end of 2nd min: distance covered by 1st bird is 8 km and 2nd is 2 km. Total distance = 10km.
By end of 3rd min: distance covered by 1st bird is 12 km and 2nd is 3 km. Total distance = 15km.

So, meeting point is 12kms from West-Town (from where 1st bird started)

Aren't birds flying way too fast. 240km/hr is an awesome speed. Faster than many cars in the world :D

---------------------------------

P.S. Don't forget to give Kudos
Marshall & McDonough Moderator
Joined: 13 Apr 2015
Posts: 1682
Location: India
Re: The distance between West-Town to East-Town is 15 kilometers. Two bird  [#permalink]

### Show Tags

04 Jul 2016, 18:39
Time taken by the birds to meet = 15/(4 + 1) = 3 mins

Distance traveled by the bird traveling from West-Town = 4 * 3 = 12

Director
Joined: 20 Feb 2015
Posts: 737
Concentration: Strategy, General Management
Re: The distance between West-Town to East-Town is 15 kilometers. Two bird  [#permalink]

### Show Tags

05 Jul 2016, 01:07
relative speed = 4+1=5 km/h
time taken = 15/4=3 hours
distance from west town = 4*3=12 kilometers
Manager
Joined: 10 Sep 2019
Posts: 52
Location: India
Concentration: Social Entrepreneurship, Healthcare
GPA: 2.6
WE: Project Management (Non-Profit and Government)
Re: The distance between West-Town to East-Town is 15 kilometers. Two bird  [#permalink]

### Show Tags

19 Nov 2019, 02:41
2
Let's assume they meet at point X - which is X Km from West-town => 15-X Km from East-town.

The time taken to reach the point X is the same for both birds => X/4 = 15-X/1

=> X = 60 - 4X

Solving we get X = 12 Km.

Ans D
Target Test Prep Representative
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 8622
Location: United States (CA)
Re: The distance between West-Town to East-Town is 15 kilometers. Two bird  [#permalink]

### Show Tags

22 Nov 2019, 13:00
Bunuel wrote:
The distance between West-Town to East-Town is 15 kilometers. Two birds start flying simultaneously towards one another, the first leaving from West-Town at a speed of 4 kilometers per minute and the second bird, leaving from East-Town, at a speed of 1 kilometers per minute. What will be the distance, in kilometers, between the meeting point and West-Town?

A. 3.
B. 7.
C. 10.
D. 12.
E. 15.

Letting t = the time at which the birds meet, we can create the distance equation:

4t + t = 15

5t = 15

t = 3

The distance between the meeting point and West-Town will be equal to the distance that the bird leaving from West-Town travels. So, the birds will meet 3 x 4 = 12 miles from West-Town.

_________________

# Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
122 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

Re: The distance between West-Town to East-Town is 15 kilometers. Two bird   [#permalink] 22 Nov 2019, 13:00
Display posts from previous: Sort by