Search found 10 matches
Help
Could someone help me with #26, 27 and 28 didn't get them correctly and Ican't get them correctly
- by cfarrera
Wed Jun 10, 2009 8:50 pm- Forum: GMAT Strategy
- Topic: 99 more Level 700+ GMAT questions from GMATPrep
- Replies: 23
- Views: 11564
I started similar to the way you did: 3x + 5x = 2, then 8x=2 x= 1/4 So you substitute in the original equation and you get 3/4 + 5/4 = 2 Then you can interpret that you will need a little less than one gallon of white paint (3/4),but as you can only buy one gallon and half gallons you need 1 gallon ...
- by cfarrera
Sat Jun 06, 2009 10:53 am- Forum: Problem Solving
- Topic: 'Though this be madness yet there is method in it.'
- Replies: 39
- Views: 7954
- by cfarrera
Sat Jun 06, 2009 10:21 am- Forum: GMAT Math
- Topic: What's YOUR favorite GMAT Quantitative shortcut?
- Replies: 21
- Views: 6368
Help!! Permutations and Combinations
I got these problems from a friend's GMAT notes, but I had a problem aproaching them mostly because a fiend permutations and combinations a bit confusing: 1. How many ways can a 3 person committe be formed from 4 couples if both members of a couple can't be on the committe? 2. In how many ways can y...
- by cfarrera
Thu May 14, 2009 7:08 pm- Forum: Problem Solving
- Topic: Help!! Permutations and Combinations
- Replies: 1
- Views: 1571
GMAT Quant Shortcut
Great Idea!!!! Here is one of my favorite shortcuts: Different Divisors contained in 2100? 1. You breakdown the number into prime factors always starting with the smallest: 2100/2, 1050/2, 525/3,175/5,35/5,7/7 2. Now you have the following prime factors: 2,2,3,5,5,7 3. 2^2,3^1,5^2,7^1 4. Now you tak...
- by cfarrera
Mon May 11, 2009 1:14 pm- Forum: GMAT Math
- Topic: What's YOUR favorite GMAT Quantitative shortcut?
- Replies: 21
- Views: 6368
- by cfarrera
Mon May 11, 2009 12:33 pm- Forum: GMAT Strategy
- Topic: 99 more Level 700+ GMAT questions from GMATPrep
- Replies: 23
- Views: 11564
Thanks Ian
Thanks Ian, the problem did not make sense to me either, I got the problem from a friend who took a GMAT workshop but probably is incorrect...
- by cfarrera
Tue Apr 14, 2009 7:25 am- Forum: Data Sufficiency
- Topic: Triangle / Data Sufficiency
- Replies: 6
- Views: 1685
Triangle / Data Sufficiency
Triangle A has sides:
1. 4x-3
2. 2x+1
3. x+8
What is the perimeter of triangle A?
(1) Triangle A is an isosceles
(2) x+8 is the greatest side
Answer is D, help!! I do not get the answer....
- by cfarrera
Mon Apr 13, 2009 1:46 pm- Forum: Data Sufficiency
- Topic: Triangle / Data Sufficiency
- Replies: 6
- Views: 1685
- by cfarrera
Mon Apr 13, 2009 1:20 pm- Forum: Problem Solving
- Topic: Help with this one!!! Tricky one...
- Replies: 9
- Views: 2021
Help with this one!!! Tricky one...
If 10! ends in two zeros, how many zeros does 50! end with?
Answer: 12
I couldn't even make an approach!!!
- by cfarrera
Sun Apr 12, 2009 8:33 pm- Forum: Problem Solving
- Topic: Help with this one!!! Tricky one...
- Replies: 9
- Views: 2021