q: The compound ratio of 2/3, 6/7, 1/5 and 1/8 is given by?
Options:
(A) 7/98
(B) 1/48
(C) 1/98
(D) 3/350
(E) 1/68
a: Stream of consciousness: 2/3 * 6/7 * 1/5 * 1/8 = 12/1400 = 3/350 The answer is (D).
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q: What amount does Kiran get if he invests Rs. 16000 at 15% p.a. simple interest for four years?
Options:
(A) Rs. 25800
(B) Rs. 15600
(C) Rs. 21600
(D) Rs. 24800
(E) Rs. 25600
a: Stream of consciousness: Simple interest = (16000 * 4 * 15)/100 = Rs. 9600
Amount = P + I = 16000 + 9600 = Rs. 25600 The answer is (E).
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q: Walking across campus, a student interviewed a group of students. 25% of the students took a finance class last semester, 54% 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) 19%
(E) 10%
a:
Stream of consciousness: {Total} = {finance} + {marketing} - {both} + {neither}
100 = 25 + 54 - {both} + 40
{both} = 19%. The answer is (D).
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