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:

Joanna bought only $0.15 stamps and $0.29 stamps. How many [#permalink]

Show Tags

05 Feb 2005, 21:14

00:00

A

B

C

D

E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct
0% (00:00) wrong based on 0 sessions

HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamps did she buy?
(1) She bought $4.40 worth of stamps.
(2) She bought an equal number of $0.15 stamps and $0.29 stamps.

Can you explain how you know that y can only be 10? I was learning towards that answer but wasn't sure how to tell if there'd be any other values taht would leave integers for both variables.

I agree A is sufficient but it means you have to make all the calculation to be sure there is no other match between the 2 kind of stamps to reach 4.40 It seems quite a long way to me. There might be a shortcut...i think the shortest way might be the one explained by Mantha

DLMD, I am sorry but I dont see how D could be the OA. There is no way to find the solution with only statement B. It could be 2, 3, 15, 100 or any other number of stamps because the only information you have is that you have the same number of stamps for each category...

I don't see how statement 2 by itself is sufficient. All you know that that statement is that there are the same number of .15 stamps as .29. Couldn't that number be anything? For example, there could be one .15 and one .29 or there could be a million .15 and a million .29.

I agree A is sufficient but it means you have to make all the calculation to be sure there is no other match between the 2 kind of stamps to reach 4.40 It seems quite a long way to me. There might be a shortcut...i think the shortest way might be the one explained by Mantha

DLMD, I am sorry but I dont see how D could be the OA. There is no way to find the solution with only statement B. It could be 2, 3, 15, 100 or any other number of stamps because the only information you have is that you have the same number of stamps for each category...

Antmavel, you are right, there is no way to get the answer just from statement 2.