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 350,000 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:

I actually just got this question in GMATprep#2 yesterday. Here's what I did.

Factor the four terms into primes:

(400)(6000)=(240)(100^x)

(2^4 5^2)(2^4 3^1 5^3)=(2^4 3^1 5^1)(2^2x 5^2x)

Combine to get, remember that (X^a)(X^b)=(X^a+b)

(2^8)(5^5)(3^1)=(2^4+2x)(5^1+2x)(3^1)

Cancel out the (3^1) to get:

(2^8)(5^5)=(2^4+2x)(5^1+2x)

Remember that there must be an equal number of exponents for each term on boths ides of the equation. Here there are eight 2's on the left side this means that there must be eight 2's on the right side, so 4+2x must equal 8.

4+2x=8 2x=4 x=2

D

You can use the same process for the exponents of 5 and you will arrive at the same answer.

Is there an easier/faster way to do this b/c this ate up alot of time during my test. especially b/c I had to factor out all the numbers.

Great to know you are joining Kellogg. A lot was being talked about your last minute interview on Pagalguy (all good though). It was kinda surprise that you got the...

This is a long overdue post! A lot of Indian applicants, having scheduled interviews in March, reached out to me asking about my interview experience with Kellogg. I had a...

A critical phase of the MBA application, concurrent to researching your target schools, is “researching yourself” and building your profile. What are your unique traits? Where do you want to be...