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Simple Video Explanations |
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Refer Your Friend And Make $40!
Make $40 for Yourself and Your Friend!
Looking for a way to make some quick cash? Well, look no further!
If you have a friend who is looking into GMAT test prep programs, just send them an email and tell them about the GMAT Pill. If they decide to enroll, then both you and your friend will make $20 each–for a total of $40!
By recommending your friend to the GMAT Pill, you’ll make the commission. Plus, your friend will get focused and quality test prep for MUCH less than the big companies. Just look around the site to see if it’s a good fit. If so, everybody wins!
Here’s how:
Step 1) Join the GMAT Pill Facebook Fan Page:
http://www.facebook.com/gmatpillStep 2) Send an email to your friend and CC (Carbon Copy) this email
address: support@gmatpill.comStep 3)Tell your friend to forward his or her email receipt to
support@gmatpill.com when he/she enrolls.That’s it!
For more details, visit the GMAT Pill Referral Program
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GMAT Pill iPhone App Available at Apple iTunes Store!
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The GMAT Pill iPhone and iPad App is now available at the Apple iTunes App Store.
1) Search for “GMAT Pill”
2) Download appThe app features free video tutorials in Problem Solving, Sentence Correction, Data Sufficiency, and Critical Reasoning.
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GMAT Test: Crazy Math Problem – Solved!
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So I got this crazy math problem from a GMATPill student who was using ManhattanGMAT material and didn’t quite understand their explanations. (It’s OK ManhattanGMAT–nobody’s perfect).Well, here’s the video that I sent back to my student.
Step 1) Notice that the numbers are EVEN and are SQUARES.
Step 2) Notice that the question is not asking for x. Rather, it is asking for some weird expression—SQUARED.
Step 3) Identify that it might make sense to re-write the equation with squares so they better match up with what we’re trying to solve for.
Step 4) Recognize that the squares now cancel out, leaving us with 4^(2x) = 40
Step 5) Recognize that the question is asking us something that looks different–but we can rewrite it so that it includes the term that we already found in step #4.
Step 6) Do the division and arrive at 2.5 –TADA!!
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Ugly Mixture Problem – GMAT Quant Prep
A certain shade of gray paint is obtained by mixing 3 parts of white paint with 5 parts of black paint. If 2 gallons of the mixture is needed and the individual colors can be purchased only in one-gallon or half- gallon cans, what is the least amount of paint, in gallons, that must be purchased in order to measure out the portions needed for the mixture?(A) 2
(B) 2 1/2
(C) 3
(D) 3 1/2
(E) 4Answer is B. Let me walk you through.
This is a mixture problem.
Step 1) "A certain shade of gray paint is obtained by mixing 3 parts of white paint with 5 parts of black paint. "
You should think: 3 parts white, 5 parts black. That means total there’s 8 parts.
More specifically, 3/8 of the mixture is white stuff and 5/8 of the mixture is black stuff.
Step 2) "If 2 gallons of the mixture is needed and the individual colors can be purchased only in one-gallon or half- gallon cans"
OK. So we know the mixture 2 gallons. How much of these 2 gallons is white stuff and how much of these 2 gallons is black stuff? Of course the white and black stuff must add up to equal 2 gallons.
Well, we know 3/8 of the mixture is white stuff. And the entire mixture is 2 gallons.
So 3/8 of the 2 gallons = 3/8 * 2 = 6/8 = 3/4 = .75 of a gallon is white stuff
Likewise 5/8 of the 2 gallons or 5/8 * 2 = 10/8 = 5/4 = 1.25 of the gallon is black stuff
Step 3) " individual colors can be purchased only in one-gallon or half- gallon cans"
What does this mean? Well, it means that the .75 needs to be rounded up to 1 gallon
And it means the 1.25 gallon needs to be rounded up to 1.5 gallons (a 1 gallon tank and a half gallon tank)
Combine the 1 gallon of white + 1.5 gallon of black = 2.5 total gallons = Answer (B) !!!
Hope that helps!
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