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:

If a certain toy store's revenue in November was 2/5 of its [#permalink]

Show Tags

30 Jun 2010, 17:26

1

This post was BOOKMARKED

00:00

A

B

C

D

E

Difficulty:

45% (medium)

Question Stats:

64% (01:57) correct
36% (01:39) wrong based on 186 sessions

HideShow timer Statictics

If a certain toy store's revenue in November was 2/5 of its revenue in December and its revenue in January was 1/4 of its revenue in November, then the store's revenue in December was how many times the average (arithmetic mean) of its revenues in November and January?

susana's algebraic solution is spot on. But most people (including me, incidentally) will be able to solve this question more quickly by picking numbers.

When you have a word problem involving fractions, you should start out by picking the lowest common denominator.

So, because the denominators in the question are 4 and 5, we should start with 20.

Let December's revenues be 20. November's revenue is simply (2/5)*20 = 8. So, January's revenue is (1/4)*8 = 2.

Re: If a certain toy store's revenue in november was 2/5... [#permalink]

Show Tags

12 Jul 2013, 09:57

2

This post received KUDOS

1

This post was BOOKMARKED

ANSWER: E

If a certain toy store's revenue in November was \(\frac{2}{5}\) of its revenue in December and its revenue in January was \(\frac{1}{4}\) of its revenue in November, then the store's revenue in December was how many times the average (arithmetic mean) of its revenues in November and January?

A) \(\frac{1}{4}\) B) \(\frac{1}{2}\) C) \(\frac{2}{3}\) D) 2 E) 4

Explanation: let December's revenue be 100 dollars. Therefore November's is 40 dollars and Jan's 10 dollars. The q is 100 dollars is what of 40+10/2.Therefore 4 times.

Re: If a certain toy store's revenue in november was 2/5... [#permalink]

Show Tags

12 Jul 2013, 10:01

1

This post received KUDOS

Expert's post

1

This post was BOOKMARKED

If a certain toy store's revenue in November was 2/5 of its revenue in December and its revenue in January was 1/4 of its revenue in November, then the store's revenue in December was how many times the average (arithmetic mean) of its revenues in November and January?

(A) 1/4 (B) 1/2 (C) 2/3 (D) 2 (E) 4

Probably, for most people it would be easier to solve such kind of questions by picking numbers.

Notice that January is linked with November and November is linked with December. So, we should pick some smart number for December's revenue. Since the denominators in the question are 5 and 4, the let say December's revenue was 20 (the least common multiple of 4 and 5). So, we have that:

Revenue in December = 20; Revenue in November = 20*2/5 = 8; Revenue in January = 8*1/4 = 2;

The average of 8 and 2 is 5, so the store's revenue in December was 20/5=4 times that value.

So, my final tally is in. I applied to three b schools in total this season: INSEAD – admitted MIT Sloan – admitted Wharton – waitlisted and dinged No...

HBS alum talks about effective altruism and founding and ultimately closing MBAs Across America at TED: Casey Gerald speaks at TED2016 – Dream, February 15-19, 2016, Vancouver Convention Center...

By Libby Koerbel Engaging a room of more than 100 people for two straight hours is no easy task, but the Women’s Business Association (WBA), Professor Victoria Medvec...