Search found 158 matches
Positives and Negatives
A certain list consists of several different integers. Is the product of all the integers in the list positive?
1. The product of the greatest and smallest of the integers in the list is positive.
2. There is an even number of integers in the list.
OA = C
- by tonebeeze
Sun May 22, 2011 11:38 am- Forum: Data Sufficiency
- Topic: Positives and Negatives
- Replies: 3
- Views: 1352
GMAT Prep - Exponents and Factoring
What is the best way not to get tripped up or slowed down by these problems?
{(1000)^2 - (999)^2} / {(101)^2 - (99)^2} =
a. 10
b. 20
c. 40
d. 80
e. 100
OA = 10
- by tonebeeze
Fri May 20, 2011 12:44 pm- Forum: Problem Solving
- Topic: GMAT Prep - Exponents and Factoring
- Replies: 1
- Views: 1376
GMAT Prep - Direct Proportions
Can someone walk me through this problem. Thanks. The rate of a chemical reaction is directly proportional to the square of concentration of chemcial A present and invesrsly proportional to the concentration of chemical B present. If chemical B is increased by 100% which of the following is the chan...
- by tonebeeze
Fri May 20, 2011 12:06 pm- Forum: Problem Solving
- Topic: GMAT Prep - Direct Proportions
- Replies: 3
- Views: 1517
GMAT Prep Overlapping Sets Problem
I am interested to seeing the different approaches to solving this problem: A certain manufacturer of cake, muffin, and bread mixes has 100 buyers, of whom 50 purchase cake mix, 40 purchase muffin mix, and 20 purchase both cake mix and muffin mix. If a buyer is to be selected at random from the 100 ...
- by tonebeeze
Fri May 20, 2011 9:54 am- Forum: Problem Solving
- Topic: GMAT Prep Overlapping Sets Problem
- Replies: 3
- Views: 1286
If progressed through the following deductions:
sqrt(x)/2 = 2x
sqrt(x) = 4x
then tested the answer choices, which saved me a lot of time. Does anyone else have any quick approaches to solving this problem?
- by tonebeeze
Tue May 17, 2011 8:15 am- Forum: Problem Solving
- Topic: GMAC paper test WT practice
- Replies: 3
- Views: 1277
- by tonebeeze
Mon May 16, 2011 4:10 pm- Forum: Problem Solving
- Topic: Triangle Practices
- Replies: 3
- Views: 1243
- by tonebeeze
Mon May 16, 2011 3:55 pm- Forum: Problem Solving
- Topic: Algebra practice
- Replies: 2
- Views: 1086
Rates GMAC paper text problem
The time it took car A to travel 400 miles was 2 hours less than the time it took car B to travel the same distance. If car A's average speed was 10 miles per hour greater than that of car B, what was car B's average speed, in miles per hour?
a. 20
b. 30
c. 40
d. 50
e. 80
OA = C
- by tonebeeze
Mon May 16, 2011 3:47 pm- Forum: Problem Solving
- Topic: Rates GMAC paper text problem
- Replies: 1
- Views: 903
Interest Problem
If x dollars is invested at 10 percent for one year and y dollars is invested at 8 percent for one year, the annual income from the 10 percent investment will exceed the annual income from the 8 percent investment by $56. If $2,000 is the total amount invested, how much is invested at 8 percent? a. ...
- by tonebeeze
Mon May 16, 2011 3:40 pm- Forum: Problem Solving
- Topic: Interest Problem
- Replies: 1
- Views: 919
Good Number Properties Problem from GMAC paper test
Can someone walk me through this one. thanks
If x, y, and z are positive integers and 3x = 4y = 7z, then the least possible value of x + y + z is
a. 33
b. 40
c. 49
d. 61
e. 84
OA = D
- by tonebeeze
Mon May 16, 2011 2:43 pm- Forum: Problem Solving
- Topic: Good Number Properties Problem from GMAC paper test
- Replies: 2
- Views: 1409
Ratios from GMAC paper test
If 5x = 6y and xy ≠0, what is the ratio of 1/5x to 1/6 y?
a. 25/6
b. 36/25
c. 6/5
d. 5/6
e. 25/36
- by tonebeeze
Mon May 16, 2011 2:39 pm- Forum: Problem Solving
- Topic: Ratios from GMAC paper test
- Replies: 2
- Views: 1181
GMAC paper test WT practice
If x is a positive number and 1/2 the square root of x is equal to 2x, then x =
a. 1/16
b. 1/4
c. 1/2
d. 2
e. 8
OA = A
- by tonebeeze
Mon May 16, 2011 2:37 pm- Forum: Problem Solving
- Topic: GMAC paper test WT practice
- Replies: 3
- Views: 1277
- by tonebeeze
Wed May 11, 2011 11:00 am- Forum: Data Sufficiency
- Topic: DS algebraic translation practice. Sam's spending.
- Replies: 2
- Views: 891
In simplifying the problem, can you review this step:
"C = 6.5X + 8.5 (1-X) --->X = (8.5 - C)/2.5 "
thanks
- by tonebeeze
Wed May 11, 2011 10:56 am- Forum: Data Sufficiency
- Topic: Coffee Blend
- Replies: 4
- Views: 1495
GMAC Paper Test: Weighted Averages
If a certain grove consists of 36 pecan trees, what was the yield per tree last year?
1. The yield per tree for the 18 trees in the northern half of the grove was 60 kilograms last year.
2. The yield per tree for the 18 trees in the eastern half of the grove was 55 kilograms last year.
OA = E
- by tonebeeze
Wed May 11, 2011 10:30 am- Forum: Data Sufficiency
- Topic: GMAC Paper Test: Weighted Averages
- Replies: 1
- Views: 1078