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:

Sorry, but I am still a bit confused. You arrived at the correct answer, but I am still lost.

Is 100z the same as 100*z or is z a digit.

In Statement 1, how did you know to multiply 100 * (0.002x)? I see it equaled 0.2x (where 2 is the tenths digit). But I don't see why we would have wanted to do that.

I have the same questions about statement 2. The statement says that the units digit is 2 (not the tenths digits), so why do we want the value to equal 0.2x? wouldn't it be 2x?

Sorry, as my questions are probably a bit confusing themselves. If you wouldn't mind going into a little more depth about why you did what you did, I would really appreciate it.

Sorry, but I am still a bit confused. You arrived at the correct answer, but I am still lost.

Is 100z the same as 100*z or is z a digit.

In Statement 1, how did you know to multiply 100 * (0.002x)? I see it equaled 0.2x (where 2 is the tenths digit). But I don't see why we would have wanted to do that.

I have the same questions about statement 2. The statement says that the units digit is 2 (not the tenths digits), so why do we want the value to equal 0.2x? wouldn't it be 2x?

Sorry, as my questions are probably a bit confusing themselves. If you wouldn't mind going into a little more depth about why you did what you did, I would really appreciate it.

Thanks.

100z = 100* z

i took one example z = 0.002x which makes 100z = 0.2x

you can take any example which satisfies the above equation.

z= yyyyy.yyy2x --> 100z = yyyyyyy.2x --> multiple solutions found. So not sufficient.

Similarly for the 2nd satement.
_________________

Your attitude determines your altitude Smiling wins more friends than frowning

Sorry, but I am still a bit confused. You arrived at the correct answer, but I am still lost.

Is 100z the same as 100*z or is z a digit.

In Statement 1, how did you know to multiply 100 * (0.002x)? I see it equaled 0.2x (where 2 is the tenths digit). But I don't see why we would have wanted to do that.

I have the same questions about statement 2. The statement says that the units digit is 2 (not the tenths digits), so why do we want the value to equal 0.2x? wouldn't it be 2x?

Sorry, as my questions are probably a bit confusing themselves. If you wouldn't mind going into a little more depth about why you did what you did, I would really appreciate it.

Thanks.

taking a real number rather than general number might help clarify the solution.

Let's say z = 6.723, question wants us to identify the hundredth digit or "2" in our case.

(1) 10th digit of 100z (= 672.3 ) is 7 --> doesn't give us 2 --> insufficient (2) unit digit of 1000z (=6723) is 3 --> doesn't give us 2--> insufficient

combined (1) and (2) give 7 and 3 --> don't give us 2 --> insufficient