q: How much 80% of 40 is greater than 10% of 15?
Options:
(A) 18
(B) 99
(C) 19
(D) 18
(E) 17
a: Stream of consciousness: (80/100) * 40 (10/100) * 15
32 - 15 = 17 The answer is (E).

question: The average length of the sides of triangle ABC is 12. What is the perimeter of triangle ABC?
Options:
(A) 4
(B) 6
(C) 12
(D) 24
(E) 36
answer: Stream of consciousness: (average) = (perimeter)/3;
12 = (perimeter)/3;
(perimeter) = 36. The answer is (E).

q: Four of the five parts numbered (a), (b), (c), (d) and (e) in the following equation are exactly equal. Which of the parts is not equal to the other four? The number of that part is the answer.
Options:
(A) 371.587 + 46.32 217.907
(B) 4 125 75 4
(C) 58.25 4.5 65.875
(D) 25 12 2 5 10
(E) 121 3.5 2 111.75
a: Stream of consciousness: The other parts are equal to 200. The answer is (C).

question: At what rate percent on simple interest will a sum of money double itself in 30 years?
Options:
(A) 3 1/9%
(B) 3 7/3%
(C) 7 1/3%
(D) 5 1/3%
(E) 1 1/3%
answer: Stream of consciousness: P = (P*30*R)/100
R = 3 1/3% The answer is (A).

q: The average of first 13 even numbers is?
Options:
(A) 10
(B) 11
(C) 12
(D) 13
(E) 14
a: Stream of consciousness: Sum of 13 even numbers = 13 * 14 = 110
Average = 182/13 = 14 The answer is (E).

q: Solve:-
333 x 333 x 333 + 555 x 555 x 555 = ?(333 x 333 - 333 x 555 + 555 x 555)
Options:
(A) 888
(B) 333
(C) 555
(D) 988
(E) 889
a:
Stream of consciousness: Given Exp. = (a3 + b3) = (a + b) = (333 + 555) = 888(a2 - ab + b2) The answer is (A).