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:

A store sells two types of birdfeeder: Alphas and Bravos. [#permalink]

Show Tags

09 Dec 2012, 13:38

5

This post received KUDOS

4

This post was BOOKMARKED

00:00

A

B

C

D

E

Difficulty:

95% (hard)

Question Stats:

30% (02:25) correct
70% (01:57) wrong based on 148 sessions

HideShow timer Statistics

A store sells two types of birdfeeder: Alphas and Bravos. Alphas feed one bird at a time, whereas Bravos feed two birds at a time. The total number of birds that can be fed at one time by birdfeeders sold last month is 50. What is the total revenue generated by birdfeeders sold last month?

(1) Last month, the price of each Alpha was $15, and the price of each Bravo was $30. (2) 40 Alphas were sold last month.

Re: A store sells two types of birdfeeder: Alphas and Bravos [#permalink]

Show Tags

09 Dec 2012, 22:09

Let a be the number of alphas sold and b be the number of bravos. Then a + 2b = 50

To know the revenue generated, we must know the price of each alpha, the price of each beta, a, and b.

Statement 1: Through this, we can find 15(a+2b). Sufficient. Statement 2: This gives us a, through which we can find b. However, we do not know the prices.

Nice little tricky question. OA is correct it should be A, not C.

A store sells two types of birdfeeder: Alphas and Bravos. Alphas feed one bird at a time, whereas Bravos feed two birds at a time. The total number of birds that can be fed at one time by birdfeeders sold last month is 50. What is the total revenue generated by birdfeeders sold last month?

Given that a+2b=50, where a and b are the number of Alphas and Bravos sold, respectively.

(1) Last month, the price of each Alpha was $15, and the price of each Bravo was $30 --> we need to find the value of 15a+30b --> 15a+30b=15(a+2b)=15*50. Sufficient.

(2) 40 Alphas were sold last month. We can find b, but we don't know the prices of each birdfeeder. Not sufficient.

Re: A store sells two types of birdfeeder: Alphas and Bravos. [#permalink]

Show Tags

10 Dec 2012, 03:29

Bunuel wrote:

Nice little tricky question. OA is correct it should be A, not C.

A store sells two types of birdfeeder: Alphas and Bravos. Alphas feed one bird at a time, whereas Bravos feed two birds at a time. The total number of birds that can be fed at one time by birdfeeders sold last month is 50. What is the total revenue generated by birdfeeders sold last month?

Given that a+2b=50, where a and b are th number of Alphas and Bravos sold, respectively.

(1) Last month, the price of each Alpha was $15, and the price of each Bravo was $30 --> we need to find the value of 15a+30b. Reduce by 15: we need to find the value of a+2b, which is given to be 50. Sufficient.

(2) 40 Alphas were sold last month. We can find b, but we don't know the prices of each birdfeeder. Not sufficient.

Re: A store sells two types of birdfeeder: Alphas and Bravos. [#permalink]

Show Tags

10 Dec 2012, 03:40

1

This post received KUDOS

Bunuel wrote:

Nice little tricky question. OA is correct it should be A, not C.

A store sells two types of birdfeeder: Alphas and Bravos. Alphas feed one bird at a time, whereas Bravos feed two birds at a time. The total number of birds that can be fed at one time by birdfeeders sold last month is 50. What is the total revenue generated by birdfeeders sold last month?

Given that a+2b=50, where a and b are the number of Alphas and Bravos sold, respectively.

(1) Last month, the price of each Alpha was $15, and the price of each Bravo was $30 --> we need to find the value of 15a+30b --> 15a+30b=15(a+2b)=15*50. Sufficient.

(2) 40 Alphas were sold last month. We can find b, but we don't know the prices of each birdfeeder. Not sufficient.

Answer: A.

Hope it's clear.

Bunuel, you really are unbreakable! Kudos for the question anyone?

Nice little tricky question. OA is correct it should be A, not C.

A store sells two types of birdfeeder: Alphas and Bravos. Alphas feed one bird at a time, whereas Bravos feed two birds at a time. The total number of birds that can be fed at one time by birdfeeders sold last month is 50. What is the total revenue generated by birdfeeders sold last month?

Given that a+2b=50, where a and b are the number of Alphas and Bravos sold, respectively.

(1) Last month, the price of each Alpha was $15, and the price of each Bravo was $30 --> we need to find the value of 15a+30b --> 15a+30b=15(a+2b)=15*50. Sufficient.

(2) 40 Alphas were sold last month. We can find b, but we don't know the prices of each birdfeeder. Not sufficient.

Answer: A.

Hope it's clear.

Bunuel, you really are unbreakable! Kudos for the question anyone?

Nice question. Kudos to you for posting it. _________________

Re: A store sells two types of birdfeeder: Alphas and Bravos. [#permalink]

Show Tags

06 Mar 2014, 09:23

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. _________________

Re: A store sells two types of birdfeeder: Alphas and Bravos. [#permalink]

Show Tags

19 Jan 2015, 01:54

This question exemplifies why its really important to multiply out the question stem and answers and figure out exactly what it is asking for.

We know that the total number of birds that can be fed at one time is 50 and that B can feed two at a time and A can feed one. Thus we know A+2B=50 (with A being the number of A birdfeeders sold and B being the umber of B birdfeeders sold)

(1) tells us that the price of the A was $15 and the price of B was $30 when we initially look at this, most people would assume that you cannot know the answer just from this, because we don't know how many total birdfeeders were sold, but let's put it into an equation 15A+30B--------> 15(A+2B) because we know what A+2B equals (50), we can actually figure out the revenue from the two birdfeeders 15(50), not need to multiply it out we now know 1 works by itself.

(2) 40 Alphas were sold last month tells us that 5 betas were sold (A+2B=50) however, since we don't know the price, we have no idea what the revenue is

Like most GMAT questions, DS questions are often based on patterns (even if you don't realize that a pattern is there). Some Test Takers are great at "pattern-matching", but even if you're not, you can usually find a hidden pattern (if one exists) by doing a little bit of work.

Here, we're told that there are 2 types of bird-feeders: 1) Alphas feed 1 bird at a time 2) Betas feed 2 birds at a time

We're also told that a number of feeders were sold and these feeders could feed 50 birds at once. Thus, we have our first equation:

A + 2B = 50

**Note: It's INTERESTING that Betas feed DOUBLE the number of birds - whoever wrote this question chose that multiple ON PURPOSE**

We're asked for the total REVENUE generated from the sale of those feeders.

Fact 1: The price of each Alpha is $15, the price of each Beta is $30.

This might not seem like enough information, but notice how the price of each Beta is DOUBLE the price of each Alpha....whoever wrote this question has now given us 2 pieces of data that are based on "doubles"....maybe there's a pattern here...

Let's run some TESTs:

IF... A = 50 B = 0 50($15) + 0($30) = $750 revenue

IF.... A = 30 B = 10 30($15) + 10($30) = $750 revenue

IF.... A = 10 B = 20 10($15) + 20($30) = $750 revenue

It looks like the revenue is ALWAYS $750. This IS enough information to answer the question. Fact 1 is SUFFICIENT

Fact 2:40 Alphas were sold last month.

This tells us nothing about prices/revenue. Fact 2 is INSUFFICIENT

Check out this awesome article about Anderson on Poets Quants, http://poetsandquants.com/2015/01/02/uclas-anderson-school-morphs-into-a-friendly-tech-hub/ . Anderson is a great place! Sorry for the lack of updates recently. I...

As you leave central, bustling Tokyo and head Southwest the scenery gradually changes from urban to farmland. You go through a tunnel and on the other side all semblance...