Last visit was: 12 Dec 2024, 10:50 It is currently 12 Dec 2024, 10:50
Home
GMAT
Messages
Tests
Schools
Reviews
Social
Chat
My Profile
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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
Back to Forum
Create Topic
User avatar
virtualanimosity
User avatar
Joined: 19 Aug 2009
Last visit: 12 Apr 2011
Posts: 72
Own Kudos:
1,067
 []
Given Kudos: 46
Posts: 72
Kudos: 1,067
 []
Two ants start simultaneously from two ant holes towards each other. 09 Sep 2009, 14:26
Kudos
Add Kudos
12
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

75% (hard)

Question Stats:

59% (03:10) correct 41% (03:39) wrong based on 70 sessions

History

Date
Time
Result
Not Attempted Yet
Two ants start simultaneously from two ant holes towards each other. The first ant covered 8% of the distance between the two ant holes in 3 hours, the second ant covered 7/120 of the distance in 2 hours 30 minutes. Find the speed (feet/h) of the second ant if the first ant traveled 800 feet to the meeting point.

(A) 15 feet/h
(B) 25 feet/h
(C) 45 feet/h
(D) 35 feet/h
(E) 40 feet/h
ShowHide Answer
Official Answer
D
Most Helpful Reply
User avatar
maliyeci
User avatar
Joined: 23 Jun 2009
Last visit: 04 Nov 2016
Posts: 201
Own Kudos:
240
 []
Given Kudos: 80
Location: Turkey
Concentration: Finance and Accounting
Schools:UPenn, UMich, HKS, UCB, Chicago
 Q51  V34
GMAT 2: 740 Q49 V41
Posts: 201
Kudos: 240
 []
Two ants start simultaneously from two ant holes towards each other. 10 Sep 2009, 00:06
5
Kudos
Add Kudos
Bookmarks
Bookmark this Post
speed of ant1=(8/3)/100 of hole per hour
speed of ant2=(7/120)/2,5=(7/3)/100 of hole per hour
if ant1 goes 800 metres to meeting point then ant2 goes 700 metres.
Total distance makes 1500 metres.
speed of ant2=(7/3)/100 of hole per hour it makes (7/3)/100 * 1500= 35 metres per hour.

4)35
General Discussion
User avatar
Economist
User avatar
Joined: 01 Apr 2008
Last visit: 24 Dec 2018
Posts: 386
Own Kudos:
4,283
Given Kudos: 18
Name: Ronak Amin
Schools: IIM Lucknow (IPMX) - Class of 2014
Schools: IIM Lucknow (IPMX) - Class of 2014
Posts: 386
Kudos: 4,283
Two ants start simultaneously from two ant holes towards each other. 10 Sep 2009, 01:49
Kudos
Add Kudos
Bookmarks
Bookmark this Post
maliyeci
speed of ant1=(8/3)/100 of hole per hour
speed of ant2=(7/120)/2,5=(7/3)/100 of hole per hour
if ant1 goes 800 metres to meeting point then ant2 goes 700 metres.
Total distance makes 1500 metres.
speed of ant2=(7/3)/100 of hole per hour it makes (7/3)/100 * 1500= 35 metres per hour.

4)35
How did you get the statement in Red?
s1=8d/300 and s2=7d/300

Now, how did you arrive at 800 and 700 as the distances?
User avatar
maliyeci
User avatar
Joined: 23 Jun 2009
Last visit: 04 Nov 2016
Posts: 201
Own Kudos:
240
 []
Given Kudos: 80
Location: Turkey
Concentration: Finance and Accounting
Schools:UPenn, UMich, HKS, UCB, Chicago
 Q51  V34
GMAT 2: 740 Q49 V41
Posts: 201
Kudos: 240
 []
Two ants start simultaneously from two ant holes towards each other. 10 Sep 2009, 01:54
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Economist
maliyeci
speed of ant1=(8/3)/100 of hole per hour
speed of ant2=(7/120)/2,5=(7/3)/100 of hole per hour
if ant1 goes 800 metres to meeting point then ant2 goes 700 metres.
Total distance makes 1500 metres.
speed of ant2=(7/3)/100 of hole per hour it makes (7/3)/100 * 1500= 35 metres per hour.

4)35
How did you get the statement in Red?
s1=8d/300 and s2=7d/300

Now, how did you arrive at 800 and 700 as the distances?
speed of ant1 = 8/300 of hole per hour
speed of ant2 = 7/300 of hour per hour
speed of ant1/speed of ant2=8/7
so in the time ant1 goes 800 metres, ant2 can go 700 metres ;)
User avatar
maliyeci
User avatar
Joined: 23 Jun 2009
Last visit: 04 Nov 2016
Posts: 201
Own Kudos:
240
Given Kudos: 80
Location: Turkey
Concentration: Finance and Accounting
Schools:UPenn, UMich, HKS, UCB, Chicago
 Q51  V34
GMAT 2: 740 Q49 V41
Posts: 201
Kudos: 240
Two ants start simultaneously from two ant holes towards each other. 10 Sep 2009, 02:22
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Speed of ant1=> ant1 covers 8% of hole in 3 hours = 8/100/3=8/300
speed of ant2=> ant2 covers 7/120 in 2,5 hours = 7/120/2,5=7/300 ;)
User avatar
Economist
User avatar
Joined: 01 Apr 2008
Last visit: 24 Dec 2018
Posts: 386
Own Kudos:
4,283
 []
Given Kudos: 18
Name: Ronak Amin
Schools: IIM Lucknow (IPMX) - Class of 2014
Schools: IIM Lucknow (IPMX) - Class of 2014
Posts: 386
Kudos: 4,283
 []
Two ants start simultaneously from two ant holes towards each other. 10 Sep 2009, 02:30
1
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
maliyeci
Economist
maliyeci
speed of ant1=(8/3)/100 of hole per hour
speed of ant2=(7/120)/2,5=(7/3)/100 of hole per hour
if ant1 goes 800 metres to meeting point then ant2 goes 700 metres.
Total distance makes 1500 metres.
speed of ant2=(7/3)/100 of hole per hour it makes (7/3)/100 * 1500= 35 metres per hour.

4)35
How did you get the statement in Red?
s1=8d/300 and s2=7d/300

Now, how did you arrive at 800 and 700 as the distances?
speed of ant1 = 8/300 of hole per hour
speed of ant2 = 7/300 of hour per hour
speed of ant1/speed of ant2=8/7
so in the time ant1 goes 800 metres, ant2 can go 700 metres ;)
ahh i got it...
so if we know speeds ( or ratio of speeds ) we can find ratio of distances keeping time as constant.
s1/s2 = d1/d2 ( where t1=t2), hence, d1/d2 = 8/7...now d1 = 800, so d2 = 800*7/8 = 700.
Nice concept!
teşekkür ederim :)
User avatar
maliyeci
User avatar
Joined: 23 Jun 2009
Last visit: 04 Nov 2016
Posts: 201
Own Kudos:
240
Given Kudos: 80
Location: Turkey
Concentration: Finance and Accounting
Schools:UPenn, UMich, HKS, UCB, Chicago
 Q51  V34
GMAT 2: 740 Q49 V41
Posts: 201
Kudos: 240
Two ants start simultaneously from two ant holes towards each other. 10 Sep 2009, 02:49
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Economist
teşekkür ederim :)
Where did you learn our thanking words "Teşekkür ederim". I am very happy to see it. Have a nice day.
User avatar
bhanushalinikhil
User avatar
Joined: 28 Jul 2009
Last visit: 12 Nov 2009
Posts: 58
Own Kudos:
164
Given Kudos: 12
Location: India
Concentration: Finance
Schools:NUS, NTU, SMU, AGSM, Melbourne School of Business
 Q39  V28
Posts: 58
Kudos: 164
Two ants start simultaneously from two ant holes towards each other. 10 Sep 2009, 03:10
Kudos
Add Kudos
Bookmarks
Bookmark this Post
maliyeci
speed of ant1=(8/3)/100 of hole per hour
speed of ant2=(7/120)/2,5=(7/3)/100 of hole per hour
if ant1 goes 800 metres to meeting point then ant2 goes 700 metres.
Total distance makes 1500 metres.
speed of ant2=(7/3)/100 of hole per hour it makes (7/3)/100 * 1500= 35 metres per hour.

4)35

You are too good at this. Great going.
avatar
srivas
avatar
Joined: 27 Oct 2008
Last visit: 28 Sep 2009
Posts: 97
Own Kudos:
303
Given Kudos: 3
Posts: 97
Kudos: 303
Two ants start simultaneously from two ant holes towards each other. 10 Sep 2009, 07:01
Kudos
Add Kudos
Bookmarks
Bookmark this Post
speed of ant1 is 8/300
speed of ant2 is 7/300
so if ant1 covers 800 ant 2 will cover 700......speed of ant2 (7/3)/100 per hour
hence (7/3)/100 * 1500= 35 metres per hour
User avatar
saswata4s
User avatar
Current Student
Joined: 28 May 2014
Last visit: 11 Apr 2023
Posts: 420
Own Kudos:
1,162
Given Kudos: 103
GMAT 1: 730 Q49 V41
GMAT 1: 730 Q49 V41
Posts: 420
Kudos: 1,162
Two ants start simultaneously from two ant holes towards each other. Updated on: 01 Mar 2017, 23:30
Originally posted by saswata4s on 27 Feb 2017, 03:44.
Last edited by saswata4s on 01 Mar 2017, 23:30, edited 1 time in total.
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Two ants start simultaneously from two ant holes towards each other. The first ant covered 8% of the distance between the two ant holes in 3 hours, the second ant covered 7/120 of the distance in 2 hours 30 minutes. Find the speed (feet/h) of the second ant if the first ant traveled 800 feet to the meeting point.
(A) 15 feet/h
(B) 25 feet/h
(C) 45 feet/h
(D) 35 feet/h
(E) 40 feet/h
User avatar
mikemcgarry
User avatar
Magoosh GMAT Instructor
Joined: 28 Dec 2011
Last visit: 06 Aug 2018
Posts: 4,485
Own Kudos:
29,381
 []
Given Kudos: 130
Expert reply
Posts: 4,485
Kudos: 29,381
 []
Two ants start simultaneously from two ant holes towards each other. 27 Feb 2017, 17:31
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
saswata4s
Two ants start simultaneously from two ant holes towards each other. The first ant covered 8% of the distance between the two ant holes in 3 hours, the second ant covered ____ of the distance in 2 hours 30 minutes. Find the speed (feet/h) of the second ant if the first ant traveled 800 feet to the meeting point.
(A) 15 feet/h
(B) 25 feet/h
(C) 45 feet/h
(D) 35 feet/h
(E) 40 feet/h
Dear saswata4s,

My friend, with all due respect, I believe something is missing from the test of the problems above. It's possible that if there were a math image, say, a fraction, and you copied and pasted, the math symbol did not paste into the plaintext of the GMAT Club problem box. You could retype what is missing in text, or use the math symbolism features.

Actually, I found this question already posted here:
https://gmatclub.com/forum/time-speed-d ... 83745.html
Always search before you start a new thread for a question. Bunuel will have to merge the topics.

Does all this make sense?
Mike :-)
User avatar
saswata4s
User avatar
Current Student
Joined: 28 May 2014
Last visit: 11 Apr 2023
Posts: 420
Own Kudos:
1,162
Given Kudos: 103
GMAT 1: 730 Q49 V41
GMAT 1: 730 Q49 V41
Posts: 420
Kudos: 1,162
Two ants start simultaneously from two ant holes towards each other. 01 Mar 2017, 23:32
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Thanks mikemcgarry for pointing out. sorry for the inconvenience caused.

Cheers.
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 12 Dec 2024
Posts: 97,847
Own Kudos:
685,347
Given Kudos: 88,255
Products:
GMAT Club Tests Forum Quiz
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 97,847
Kudos: 685,347
Two ants start simultaneously from two ant holes towards each other. 01 Mar 2017, 23:41
Kudos
Add Kudos
Bookmarks
Bookmark this Post
mikemcgarry
saswata4s
Two ants start simultaneously from two ant holes towards each other. The first ant covered 8% of the distance between the two ant holes in 3 hours, the second ant covered ____ of the distance in 2 hours 30 minutes. Find the speed (feet/h) of the second ant if the first ant traveled 800 feet to the meeting point.
(A) 15 feet/h
(B) 25 feet/h
(C) 45 feet/h
(D) 35 feet/h
(E) 40 feet/h
Dear saswata4s,

My friend, with all due respect, I believe something is missing from the test of the problems above. It's possible that if there were a math image, say, a fraction, and you copied and pasted, the math symbol did not paste into the plaintext of the GMAT Club problem box. You could retype what is missing in text, or use the math symbolism features.

Actually, I found this question already posted here:
https://gmatclub.com/forum/time-speed-d ... 83745.html
Always search before you start a new thread for a question. Bunuel will have to merge the topics.

Does all this make sense?
Mike :-)

Topics merged. Thank you Mike.
Moderator:
Bunuel
Math Expert
97847 posts