Search found 484 matches
easy one
How many liters of an acid solution with no salt content should be mixed with 35 liters of a saline solution with 40% salt content to yield a 32% saline solution?
(A) 4.12
(B) 8.75
(C) 18
(D) 35
(E) 43.75
- by magical cook
Mon Jan 28, 2008 9:43 am- Forum: Problem Solving
- Topic: easy one
- Replies: 2
- Views: 1599
medium question
There are 68 children in the cafeteria of a school and all of the children have something for lunch. Thirty-four of the children brought lunches from home, 23 of the children bought a drink from the cafeteria beverage machine, and 32 of the children bought fruit in the cafeteria. If 18 children did ...
- by magical cook
Wed Jan 23, 2008 4:12 pm- Forum: Problem Solving
- Topic: medium question
- Replies: 2
- Views: 1825
- by magical cook
Wed Jan 23, 2008 3:46 pm- Forum: Data Sufficiency
- Topic: medium question
- Replies: 2
- Views: 1523
medium question
How many people bought TVs at the Electronics Depot?
(1) If six Electronics Depot customers are chosen at random, one of the six bought a TV.
(2) If four Electronics Depot customers are chosen at random there are 100 different groups of people that could be chosen.
- by magical cook
Wed Jan 23, 2008 1:42 pm- Forum: Data Sufficiency
- Topic: medium question
- Replies: 2
- Views: 1523
sorry for the confusion. forget about the first (1) that's from somewhere...
anyway, I first thought D too but answer is B. thanks
- by magical cook
Wed Jan 23, 2008 5:41 am- Forum: Data Sufficiency
- Topic: another simple one
- Replies: 6
- Views: 1761
another simple one
In the telephone number 936-215X, what digit does X represent?
(2) The perimeter of floor X is 16 meters.
(1) Only one digit in the telephone number is greater than X.
(2) X is the greatest of the digits not among the telephone number’s first six digits.
- by magical cook
Tue Jan 22, 2008 9:46 pm- Forum: Data Sufficiency
- Topic: another simple one
- Replies: 6
- Views: 1761
simple one
For any numbers a and b, a · b = a + b – ab.
If a · b = 0, which of the following CANNOT be a value of b?
(A) 2
(B) 1
(C) 0
(D) -1
(E) -2/3
simple but I got it wong... OA will follow. can you pls explain?
- by magical cook
Tue Jan 22, 2008 9:35 pm- Forum: Problem Solving
- Topic: simple one
- Replies: 2
- Views: 1400
- by magical cook
Mon Jan 21, 2008 10:03 am- Forum: Data Sufficiency
- Topic: triangle
- Replies: 4
- Views: 1937
- by magical cook
Mon Jan 21, 2008 10:01 am- Forum: Data Sufficiency
- Topic: geometry
- Replies: 3
- Views: 1654
geometry
What is the difference in the circumferences of circles A and B?
(1) The difference in the areas of the two circles is 4.
(2) The difference in radii of the two circles is 2.
- by magical cook
Mon Jan 21, 2008 9:17 am- Forum: Data Sufficiency
- Topic: geometry
- Replies: 3
- Views: 1654
- by magical cook
Sun Jan 06, 2008 5:07 pm- Forum: Data Sufficiency
- Topic: ps
- Replies: 4
- Views: 1836
thanks,
1) is def sufficient
but for 2) x^2 = 36 is +/- 6, so I was not sure if it's okay to say suff for the answewr -6..
- by magical cook
Sun Jan 06, 2008 4:59 pm- Forum: Data Sufficiency
- Topic: ps
- Replies: 4
- Views: 1836
- by magical cook
Sun Jan 06, 2008 3:50 pm- Forum: Data Sufficiency
- Topic: ps
- Replies: 4
- Views: 1836
- by magical cook
Sat Jan 05, 2008 8:53 pm- Forum: Data Sufficiency
- Topic: missing somethin?
- Replies: 5
- Views: 2124
- by magical cook
Sat Jan 05, 2008 8:42 pm- Forum: Data Sufficiency
- Topic: missing somethin?
- Replies: 5
- Views: 2124