q: Anitha had 80 currency notes in all, some of which are of Rs 95 denomination and the remaining of Rs 45 denomination. The total amount of all these currency notes was Rs. 4000. How much amount (in Rs) did she have in the denomination of Rs 45?
Options:
(A) 3500
(B) 72
(C) 2000
(D) 3000
(E) 4000
a: Stream of consciousness: Let the number of 45-rupee notes = x
Then, the number of 95-rupee notes = (80 x)
45x + 95(80 x) = 4000 or x + 2(80 x) = 95 or x = 72. The answer is (B).
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q: John left home and drove at the rate of 45 mph for 2 hours. He stopped for lunch then drove for another 3 hours at the rate of 45 mph to reach his destination. How many miles did John drive?
Options:
(A) 235 miles.
(B) 245 miles.
(C) 225 miles.
(D) 265 miles.
(E) 275 miles.
a: Stream of consciousness: The total distance D traveled by John is given by
D = 45 * 2 + 3 * 45 = 225 miles. The answer is (C).
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q: If rupee one produces rupees nine over a period of 54 years, find the rate of simple interest?
Options:
(A) 22 1/7 %
(B) 22 3/2 %
(C) 22 1/8 %
(D) 22 1/2 %
(E) 16 2/3 %
a:
Stream of consciousness: 9 = (1*54*R)/100
R = 16 2/3 % The answer is (E).
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