q: The purchase price of an article is $48. In order to include 5% of cost for overhead and to provide $12 of net profit, the markup should be
Options:
(A) 15%
(B) 25%
(C) 30%
(D) 40%
(E) 45%
a: Stream of consciousness: Cost price of article = 48$
% of overhead cost = 5
Net profit = 12 $
We need to calculate % markup
Net profit as % of cost price = (12/48)*100 = 25%
Total markup should be = 25 + 5 = 30% The answer is (C).

question: For some integer n, n^2 - 5 is divisible by all of the following EXCEPT
Options:
(A) 41
(B) 38
(C) 29
(D) 30
(E) 31
answer: Stream of consciousness: Hint: n^2-5 (n is an integer) is never multiple of 3 (try to prove this), hence 30 is out. The answer is (D).

q: In each series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much? Look at this series: 5, 43, 15, 33, 25, ...What number should come next?
Options:
(A) 10
(B) 40
(C) 23
(D) 13
(E) 20
a: Stream of consciousness: C
23
This is an alternating addition and subtraction series. In the first pattern, 10 is added to each number to arrive at the next. In the second, 10 is subtracted from each number to arrive at the next. The answer is (C).

question: Walking across campus, a student interviewed a group of students. 25% of the students took a finance class last semester, 52% took a marketing class last semester, and 40% took neither a finance nor a marketing class last semester. What percent of the students in the group took both a finance and a marketing class?
Options:
(A) 60%
(B) 50%
(C) 25%
(D) 17%
(E) 10%
answer: Stream of consciousness: {Total} = {finance} + {marketing} - {both} + {neither}
100 = 25 + 52 - {both} + 40
{both} = 17%. The answer is (D).

q: The measure of the side of a square is tripled. If x represents the perimeter of the original square, what is the value of the new perimeter?
Options:
(A) 3x
(B) 4x
(C) 9x
(D) 12x
(E) 27x
a: Stream of consciousness: Original perimeter = x
Hence original side = x/4
New side = 3x/4
New perimeter = 4*3x/4 = 3x The answer is (A).

q: What is the sum of all the prime numbers greater than 50 but less than 70?
Options:
(A) 249
(B) 248
(C) 246
(D) 240
(E) 241
a:
Stream of consciousness: Required sum = (53 + 59 + 61 + 67 ) = 240
Note: 1 is not a prime number The answer is (D).