Search found 79 matches
Can you please make sure that the question you wrote below is using the same exact text as it appeared and also include the answer choices. Thanks.
- by jzw
Sun Mar 18, 2012 10:01 am- Forum: Problem Solving
- Topic: What is wrong with my approach ?
- Replies: 10
- Views: 1519
So here is how I did it using the box method. I attached pictures bec typing math isn't pretty. First step is to write out what we know. Always show yourself what your target goal is. Next is to use the information we have to figure out what we don't have. Finally, use the information that we get to...
- by jzw
Sun Mar 18, 2012 9:10 am- Forum: Problem Solving
- Topic: Allegation
- Replies: 16
- Views: 25901
circumference of circle = 2pi*r so perimeter of square = (40 - 2pi*r) hence side of square is (40 -2pi*r)/4 = 10 - 1/2 pi*r so total area is pi*r^2 + (10 - 1/2 pi*r)^2 I have seen this question before. It's definitely a 700 level question, one of the more tricksy ones that in reality, "regular...
- by jzw
Sun Mar 18, 2012 8:19 am- Forum: Problem Solving
- Topic: Thin piece of wire
- Replies: 7
- Views: 4102
Here's the allegation method. When combining a lower percentage (L) with a higher percentage (H) to achieve a goal percentage (G): The proportion needed of L = H-G (the positive difference between the higher percentage and the goal percentage) The proportion needed of H = G-L (the positive differen...
- by jzw
Sun Mar 18, 2012 6:50 am- Forum: Problem Solving
- Topic: Allegation
- Replies: 16
- Views: 25901
solution problem using box method
Can someone please assist with constructing the formula based on the chart method. Please tell me what I did wrong using THIS method. Thanks. "Equal amounts of water and acid are added to 40 quarts of 80% acid solution. The new mixture has a concentration of 70%. How much acid is in the resulti...
- by jzw
Sat Mar 17, 2012 12:41 pm- Forum: Problem Solving
- Topic: solution problem using box method
- Replies: 5
- Views: 2395
mixture solution using the chart method
Before you read below, please know that I figured out the answer as I was doing it, but I decided to post it anyway just in case somehow the information could prove useful to another GMAT studier.... i'm addicted to the chart method (also called box method) because it's generally easy to set up. i a...
- by jzw
Sat Mar 17, 2012 11:42 am- Forum: Problem Solving
- Topic: mixture solution using the chart method
- Replies: 2
- Views: 2164
thank you for once again lifting a cloud of confusion that i hadn't realized was there. i've been converting everything to fractions of an hour - and you're right, it's just a colossal waste of time, and it causes mistakes. i was about to post a problem seperately in another post, one in which i cou...
- by jzw
Sat Mar 17, 2012 10:05 am- Forum: Problem Solving
- Topic: need confirmation that this question was done correctly pls
- Replies: 3
- Views: 1619
need confirmation that this question was done correctly pls
can someone please review this question and more specifically - the way i did it. i need confirmation that i solved the problem correctly. i know there are many many ways of solving rate problems; with respect - @ this point it's too late for me to learn new ways - just hoping an expert can follow t...
- by jzw
Fri Mar 16, 2012 8:46 pm- Forum: Problem Solving
- Topic: need confirmation that this question was done correctly pls
- Replies: 3
- Views: 1619
- by jzw
Fri Mar 16, 2012 3:00 pm- Forum: GMAT Strategy
- Topic: laminated sheets and marker - gmat test veterans pls respond
- Replies: 3
- Views: 3991
laminated sheets and marker - gmat test veterans pls respond
In trying to adequately prepare for the actual GMAT, I am trying to recreate what the scratch pad or laminated sheets and markers look like, instead of buying another graph paper notebook. I have taken a picture of what I created. Can someone please tell me if this is close to what it really looks l...
- by jzw
Fri Mar 16, 2012 1:01 pm- Forum: GMAT Strategy
- Topic: laminated sheets and marker - gmat test veterans pls respond
- Replies: 3
- Views: 3991
HOLY $@#& I FINALLY UNDERSTAND RATES!!
Not sure why, but sometimes I have a mental block at understanding a concept. Different methods of learning work for different types of math problems. For instance, I didn't quite get combinations completely even though I spent 10 hours a day for 5 days going over and over it. And then, krusta80 (us...
- by jzw
Fri Mar 16, 2012 12:41 pm- Forum: GMAT Strategy
- Topic: HOLY $@#& I FINALLY UNDERSTAND RATES!!
- Replies: 2
- Views: 1074
would anyone be willing to do the original problem using the rate pie method please? i just need to see it applied once and i should be able to re-apply it afterward. i really appreciate it. taking the gmat next week!
- by jzw
Wed Mar 14, 2012 1:39 pm- Forum: Problem Solving
- Topic: Average
- Replies: 8
- Views: 1954
idiot proof sales tax formula?
Sarah paid a sales tax of 8% on her purchase. If the sales tax had only been 5%, she would have paid $12 less on her purchase. What was the total amount Sarah paid for her purcahse, including sales tax? A. 368 B. $380 C. $400 D. $420 E. $432 Ok. So I know the answer is E, but only because I kinda go...
- by jzw
Wed Mar 14, 2012 1:26 pm- Forum: Problem Solving
- Topic: idiot proof sales tax formula?
- Replies: 2
- Views: 1227
- by jzw
Fri Mar 09, 2012 6:42 pm- Forum: Sentence Correction
- Topic: og 109
- Replies: 11
- Views: 2271
can someone explain why it's "in healing" and not "to heal" ?
i understand that it's "either asking or thanking" - but does one as for help "in healing" or does one ask for help "to be healed"?
- by jzw
Fri Mar 09, 2012 5:11 pm- Forum: Sentence Correction
- Topic: og 109
- Replies: 11
- Views: 2271