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.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

Of the goose eggs laid at a certain pond, 2/3 hatched and 3/ [#permalink]

Show Tags

19 Jun 2008, 23:38

1

This post received KUDOS

4

This post was BOOKMARKED

00:00

A

B

C

D

E

Difficulty:

15% (low)

Question Stats:

78% (02:24) correct
22% (01:24) wrong based on 204 sessions

HideShow timer Statistics

Of the goose eggs laid at a certain pond, 2/3 hatched and 3/4 of the geese that hatched from those eggs survived the first month. Of the geese that survived the first month, 3/5 did not survive the first year. If 120 geese survived the first year and if no more than one goose hatched from each egg, how many goose eggs were laid at the pond?

I tried solving it in this way Let total eggs laid=x then x*(2/3)*(3/4)*(3/5) is the no of eggs who didnt survive so eggs who survived= x-3x/10=120 this doesnt give answer.

Of the goose eggs laid at a certain pond, 2/3 hatched, and 3/4 of the geese that hatched from those eggs survived the first month. Of the geese that survived the first month, 3/5 did not survive the first year. If 120 geese survived the first year and if no more than one goose hatched from each egg, how many goose eggs were laid at the pond? A. 280 B. 400 C. 540 D. 600 E. 840 I tried solving it in this way Let total eggs laid=x then x*(2/3)*(3/4)*(3/5) is the no of eggs who didnt survive so eggs who survived= x-3x/10=120 this doesnt give answer.

your ratios are wrong. they should be 1/3, 1/4 and 3/5

Of the goose eggs laid at a certain pond, 2/3 hatched, and 3/4 of the geese that hatched from those eggs survived the first month. Of the geese that survived the first month, 3/5 did not survive the first year. If 120 geese survived the first year and if no more than one goose hatched from each egg, how many goose eggs were laid at the pond? A. 280 B. 400 C. 540 D. 600 E. 840 I tried solving it in this way Let total eggs laid=x then x*(2/3)*(3/4)*(3/5) is the no of eggs who didnt survive so eggs who survived= x-3x/10=120 this doesnt give answer.

IMO D My approach let the total number of eggs laid be x 2/3 hathced = 2x/3 and 3/4 of the geese that hatched from those eggs survived the first month = x/2 Of the geese that survived the first month, 3/5 did not survive the first year(number who survived) = x/5 which is equal to 120 therefore x = 600 HTH
_________________

Of the goose eggs laid at a certain pond, 2/3 hatched, and 3/4 of the geese that hatched from those eggs survived the first month. Of the geese that survived the first month, 3/5 did not survive the first year. If 120 geese survived the first year and if no more than one goose hatched from each egg, how many goose eggs were laid at the pond? A. 280 B. 400 C. 540 D. 600 E. 840 I tried solving it in this way Let total eggs laid=x then x*(2/3)*(3/4)*(3/5) is the no of eggs who didnt survive so eggs who survived= x-3x/10=120 this doesnt give answer.

I got D.

let t bee the total number of eggs laid. Of the tatal eggs laid, 2/3 hatched therfore 2/3t. 3/4 of the eggs that hatched survived the first month. 3/4 x 2/3t = 1/2t 3/5 did not survive the first year hence 3/5 x 1/2t = 3/10t meaning 2/10t survived. so it says 120 geese = 2/10t.

therefore to find the total number of eggs hatched will be 120 x 10/2t which is equal to 600.

2/3 hatched 3/4 of the geese survived 3/5 did not survive

This is a great example of what tricks thrown at you in the GMAT. Read carefully for the "not" modifiers. Not only in the full question, but in the question stem. They are testing more your ability to critically read than your ability to solve math problems.

You can also back solve this question by picking choices from answers ( makes life easier) for example pick D =600 600*2/3=400 hatched 400*3/4=300 Survived first month 300*3/5=180 did not survive Total survived=300-180=120

Of the goose eggs laid at a certain pond, 2/3 hatched, and 3/4 of the geese that hatched from those eggs survived the first month. Of the geese that survived the first month, 3/5 did not survive the first year. If 120 geese survived the first year and if no more than one goose hatched from each egg, how many goose eggs were laid at the pond? A. 280 B. 400 C. 540 D. 600 E. 840 I tried solving it in this way Let total eggs laid=x then x*(2/3)*(3/4)*(3/5) is the no of eggs who didnt survive so eggs who survived= x-3x/10=120 this doesnt give answer.

When you face a long text question in GMAT, try reading and analyzing one line at a time rather than trying to make sense of the whole question in a go. This is what I would do:

Of the goose eggs laid at a certain pond, 2/3 hatched, and 3/4 of the geese that hatched from those eggs survived the first month. - This means 2/3 *3/4 = 1/2 of the eggs survived the first month.

Of the geese that survived the first month, 3/5 did not survive the first year. - This means 3/5 of 1/2 (those who survived first month) i.e. 3/10 did not survive the first year and 2/5 of 1/2 = 1/5 survived the first year.

If 120 geese survived the first year and if no more than one goose hatched from each egg, how many goose eggs were laid at the pond? - This means 1/5 calculated above is equal to 120 so total eggs laid were 5*120 = 600.

More often than not, by the time you reach the last statement, most of your question would be already solved.
_________________

Re: Of the goose eggs laid at a certain pond, 2/3 hatched, and [#permalink]

Show Tags

31 Mar 2014, 10:29

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

Of the goose eggs laid at a certain pond, 2/3 hatched and 3/4 of the geese that hatched from those eggs survived the first month. Of the geese that survived the first month, 3/5 did not survive the first year. If 120 geese survived the first year and if no more than one goose hatched from each egg, how many goose eggs were laid at the pond?

(A) 280 (B) 400 (C) 540 (D) 600 (E) 840

Of the goose eggs laid at a certain pond, 2/3 hatched and 3/4 of the geese that hatched from those eggs survived the first month: 2/3*3/4 = 1/2 survived the first month.

Of the geese that survived the first month, 3/5 did not survive the first year: (1-3/5)*1/2 = 1/5 survived the first year.

Happy New Year everyone! Before I get started on this post, and well, restarted on this blog in general, I wanted to mention something. For the past several months...

It’s quickly approaching two years since I last wrote anything on this blog. A lot has happened since then. When I last posted, I had just gotten back from...

Happy 2017! Here is another update, 7 months later. With this pace I might add only one more post before the end of the GSB! However, I promised that...

The words of John O’Donohue ring in my head every time I reflect on the transformative, euphoric, life-changing, demanding, emotional, and great year that 2016 was! The fourth to...