question: In a class, the average age of 45 boys is 10 years and the average of 15 girls is 10 years. what is the average age of the whole class?
Options:
(A) 12 Years
(B) 12.3 Years
(C) 10 Years
(D) 13 Years
(E) 15 Years
answer: Stream of consciousness: Total age of 60 students
(45X 10+15 X 10) = 630
Average = 600/60 = 10 Years The answer is (C).
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question: Find the mean proportional between 25 & 36?
Options:
(A) A) 59
(B) B) 30
(C) C) 63
(D) D) 65
(E) E) 67
answer: Stream of consciousness: Formula = √a×b
A = 25 and B = 36
√25×36 = 5 × 6 = 30 The answer is (B).
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question: If a company allocates 25 percent of its budget to advertising, 15 percent to capital improvements, and 55 percent to salaries, what fraction of its budget remains for other allocations?
Options:
(A) 4/5
(B) 3/5
(C) 3/10
(D) 1/20
(E) 1/40
answer: Stream of consciousness: 25 + 15 + 55 = 95% 100 - 95 = 5% to all others The answer is (D).
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question: Rs.900 amounts to Rs.920 in 3 years at simple interest. If the interest is increased by 3%, it would amount to how much?
Options:
(A) Rs.1056
(B) Rs.1001
(C) Rs.2056
(D) Rs.1026
(E) Rs.1856
answer:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Stream of consciousness: (900*3*3)/100 = 81
920 + 81 = 1001 The answer is (B).
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