Search found 28 matches
A little help with this one, please
The equation 5^x - 3/a = a, where a is a real non-zero number, is possible only if:
A) a > 0
B) a = 0
C) a < 0
D) a > 3^1/2
E) a < - 3^1/2
OA: A
Thank you.
- by fambrini
Tue Nov 22, 2016 3:18 pm- Forum: Problem Solving
- Topic: A little help with this one, please
- Replies: 6
- Views: 2873
Having problems to solve this. Help, please?
If x ≠-y, is x - y / x + y > 1?
1) x > 0
2) y < 0
OA: E
Thanks,
Fambrini
- by fambrini
Thu Nov 10, 2016 3:57 pm- Forum: Data Sufficiency
- Topic: Having problems to solve this. Help, please?
- Replies: 2
- Views: 1580
Thanks Rich. I've tried this one again after practicing a lot of other absolute value questions and I got it. The most important concept for me was that |b - c| can be interpreted as the distance between b and c. Also, I've tried using values like you've mentioned and it worked. Thanks for that too!...
- by fambrini
Thu Nov 10, 2016 3:51 pm- Forum: Data Sufficiency
- Topic: Trouble with this absolute value problem
- Replies: 4
- Views: 2010
Trouble with this absolute value problem
If a ≠0, b ≠0, c ≠0, is a(b + c) > 0?
1) |b - c| = |b| - |c|
2) |a + b| = |a| + |b|
OA: C
- by fambrini
Wed Nov 09, 2016 4:42 pm- Forum: Data Sufficiency
- Topic: Trouble with this absolute value problem
- Replies: 4
- Views: 2010
Need help with this question
At store A, the profit from the sale of x units of a certain product is given by the formula P = -50x² + 600x. What is the maximum profit that the store can have from the sale of that product?
A) 6
B) 12
C) 600
D) 1800
E) 3600
OA: D
- by fambrini
Wed Nov 09, 2016 4:36 pm- Forum: Problem Solving
- Topic: Need help with this question
- Replies: 5
- Views: 2148
A little help with this one, please?
If y = |x - 2| + |x - 3|, is y = 1?
1) 2 < x < 3
2) x > 2
OA: A
- by fambrini
Tue Nov 08, 2016 4:45 pm- Forum: Data Sufficiency
- Topic: A little help with this one, please?
- Replies: 3
- Views: 1922
Any help, please?
If |2x + 1| <= 0, then A) x must be less than or equal to - 1/2 B) x must be equal to - 1/2 C) x must be larger than - 1/2 D) x could be 1/2 E) x doesn't exist OA: B I can develop the inequality in order to reach x <= - 1/2 or x >= - 1/2. I just don't understand the official answer. Thanks, Fambrini
- by fambrini
Tue Nov 08, 2016 4:43 pm- Forum: Problem Solving
- Topic: Any help, please?
- Replies: 6
- Views: 2355
Can someone help me solve this?
At the bakery, Lew spent a total of $6.00 per one kind of cupcake and one kind of doughnut. How many doughnuts did he buy? 1) The price of 2 doughnuts was $0.10 less than the price of 3 cupcakes. 2) The average (arithmetic mean) price of 1 doughnut and 1 cupcake was $0.35 OA: E I was able to get it ...
- by fambrini
Wed Oct 26, 2016 4:58 pm- Forum: Data Sufficiency
- Topic: Can someone help me solve this?
- Replies: 3
- Views: 2368
Can someone help with this one please?
Working alone, Sumio can mow a certain field in x hours. Yoko can mow 50% more field in the same time. When the two work together, they are paid m dollars each one. If Sumio decides to pay Yoko n dollars so they would have received the same compensation per field mowed, what is n in terms of m? A) 1...
- by fambrini
Wed Oct 26, 2016 4:52 pm- Forum: Problem Solving
- Topic: Can someone help with this one please?
- Replies: 3
- Views: 2587
Having trouble with this one. Any help?
Juan bought some paperback books that cost $8 each and some hardcover book that cost $25 each. If Juan bought more than 10 paperback books, how many hardcover books did he buy? 1) The total cost of the hardcover books that Juan bought was at least $150 2) The total cost of all the books that Juan bo...
- by fambrini
Wed Oct 26, 2016 4:47 pm- Forum: Data Sufficiency
- Topic: Having trouble with this one. Any help?
- Replies: 3
- Views: 2437
Need a little help please
The bookstore at Union College buys used text-books from students and offers them for resale at a price that is a fixed percent of the original price of the book when it was new, regardless of the title of the book or its condition. If a new freshman chemistry book sells for $40, at what price shoul...
- by fambrini
Wed Oct 26, 2016 4:38 pm- Forum: Data Sufficiency
- Topic: Need a little help please
- Replies: 2
- Views: 1871
- by fambrini
Tue Oct 25, 2016 5:07 pm- Forum: Problem Solving
- Topic: Need a faster way to solve this one
- Replies: 3
- Views: 2495
Thanks Rich. I wasn't familiar with the term station wagon since I'm not a native english speaker. I'll be aware when situations like this come up.
Thanks,
Fambrini
- by fambrini
Tue Oct 25, 2016 5:06 pm- Forum: Problem Solving
- Topic: Need a little help please
- Replies: 5
- Views: 3504
Need a faster way to solve this one
EDIT: I'm sorry. Just realized this question was discussed here http://www.beatthegmat.com/interesting-question-t277804.html#724362 A certain business produced x rakes each month from November through February and shipped x/2 rakes at the beginning of each month from March to October. The business p...
- by fambrini
Tue Oct 25, 2016 4:54 pm- Forum: Problem Solving
- Topic: Need a faster way to solve this one
- Replies: 3
- Views: 2495
Need a little help please
A dealer owns a group of station wagons and motorcycles. If the number of tires (excluding spare tires) on the vehicles is 30 more than twice the number of vehicles, then the number of station wagons the dealer owns is
A) 10
B) 15
C) 20
D) 30
E) 45
OA: B
- by fambrini
Tue Oct 25, 2016 4:47 pm- Forum: Problem Solving
- Topic: Need a little help please
- Replies: 5
- Views: 3504