i came across a few questions that tests the rearrangement : Quant Question Archive [LOCKED]
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 16 Jan 2017, 22:23

### GMAT Club Daily Prep

#### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# i came across a few questions that tests the rearrangement

Author Message
CEO
Joined: 21 Jan 2007
Posts: 2756
Location: New York City
Followers: 11

Kudos [?]: 850 [0], given: 4

i came across a few questions that tests the rearrangement [#permalink]

### Show Tags

11 Jan 2008, 09:44
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

i came across a few questions that tests the rearrangement of ratios. For example,

A/B = C/D, which is equal to AD = BC, which is equal to A=BC/D, which in turn is equal to A/B =D/E

now, my question is, is there a formula sheet or a set pattern to recognize these tranposing of ratios?
_________________

You tried your best and you failed miserably. The lesson is 'never try'. -Homer Simpson

Director
Joined: 12 Jul 2007
Posts: 862
Followers: 15

Kudos [?]: 286 [0], given: 0

Re: tranposing ratios - help needed [#permalink]

### Show Tags

11 Jan 2008, 09:53
It's algebraic my friend! No tricky formulas necessary!

A/B = C/D (multiply each side by BD to get) AD = CB
AD = CB (divide each side by D to get) A = CB/D

and I believe there's a typo in the last equation A/B = D/E since E hasn't been introduced at all.
A=CB/D (divide each side by B to get) A/B = C/D (which is what we started out with)
CEO
Joined: 21 Jan 2007
Posts: 2756
Location: New York City
Followers: 11

Kudos [?]: 850 [0], given: 4

Re: tranposing ratios - help needed [#permalink]

### Show Tags

11 Jan 2008, 10:06
yea, typo in the last part.

I assume we can also turn A = CB/D into A/C = B/D
_________________

You tried your best and you failed miserably. The lesson is 'never try'. -Homer Simpson

Director
Joined: 12 Jul 2007
Posts: 862
Followers: 15

Kudos [?]: 286 [0], given: 0

Re: tranposing ratios - help needed [#permalink]

### Show Tags

11 Jan 2008, 10:09
bmwhype2 wrote:
yea, typo in the last part.

I assume we can also turn A = CB/D into A/C = B/D

yup, it's just multiplying and dividing and making sure you cancel out variables that show up in the denominator and numerator
Re: tranposing ratios - help needed   [#permalink] 11 Jan 2008, 10:09
Display posts from previous: Sort by