question: A train 150 meters long completely crosses a 320 meters long bridge in 40 seconds. What is the speed of the train is?
Options:
(A) 32
(B) 42
(C) 54
(D) 66
(E) 09
answer: Stream of consciousness: S = (150 + 320)/40 = 470/40 * 18/5 = 42 The answer is (B).

q: Some persons can do a piece of work in 12 days. Two times the number of these people will do half of that work in?
Options:
(A) 3
(B) 4
(C) 5
(D) 6
(E) 8
a: Stream of consciousness: 12/ (2 * 2) = 3 days The answer is (A).

question: For any numbers w and z, w#z = w^3z(8 - w^2). If both z and w#z are positive numbers, which of the following could be a value of w?
Options:
(A) 9
(B) 3
(C) 0
(D) 2
(E) 9
answer: Stream of consciousness: Since w#Z and w are positive, we need to take the value of w such that w#z or w^3z(8 - w^2) is positiv The answer is (E).

q: The purchase price of an article is $48. In order to include 15% of cost for overhead and to provide $12 of net profit, the markup should be
Options:
(A) 15%
(B) 25%
(C) 35%
(D) 40%
(E) 45%
a: Stream of consciousness: Cost price of article = 48$
% of overhead cost = 15
Net profit = 12 $
We need to calculate % markup
Net profit as % of cost price = (12/48)*100 = 25%
Total markup should be = 25 + 15 = 40% The answer is (D).

question: A train 250 m long running at 72 kmph crosses a platform in 25 sec. What is the length of the platform?
Options:
(A) 150m
(B) 200m
(C) 250m
(D) 270m
(E) 300 m
answer: Stream of consciousness: D = 72 * 5/18 = 25 = 500 250 = 250m The answer is (C).

question: What is the maximum number of pieces of birthday cake of size 2" by 2" that can be cut from a cake 20" by 20"?
Options:
(A) 5
(B) 100
(C) 16
(D) 20
(E) 25
answer:
Stream of consciousness: The prompt is essentially asking for the maximum number of 2 x 2 squares that can be cut from a larger 20 by 20 square. Since each 'row' and each 'column' of the larger square can be sub-divided into 10 'pieces' each, we have (10)(10) = 100 total smaller squares (at maximum). The answer is (B).