question: How much 60% of 50 is greater than 40% of 30?
Options:
(A) 18
(B) 91
(C) 11
(D) 17
(E) 12
answer: Stream of consciousness: (60/100) * 50 (40/100) * 30
30 - 12 = 18 The answer is (A).
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question: Express a speed of 720 kmph in meters per second?
Options:
(A) 120 mps
(B) 200 mps
(C) 181 mps
(D) 190 mps
(E) 125 mps
answer: Stream of consciousness: 720 * 5/18 = 200 mps The answer is (B).
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question: Find the amount on Rs.8000 in 9 months at 20% per annum, if the interest being compounded quarterly?
Options:
(A) 1323
(B) 9261
(C) 2788
(D) 2999
(E) 1722
answer: Stream of consciousness: A = 8000(21/20)3 = 9261 The answer is (B).
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question: A train traveling at 72 kmph crosses a platform in 30 seconds and a man standing on the platform in 16 seconds. What is the length of the platform in meters?
Options:
(A) 240 meters
(B) 360 meters
(C) 280 meters
(D) 600 meters
(E) Cannot be determined
answer:
Stream of consciousness: Speed of the train in metres/sec = 72000/3600 = 20
Distance travelled by train to cross the platform = 30 * 20 = 600 = Length of train + Length of platform
Distance travelled by train to cross the man = 16 * 20 = 320 = Length of train
Length of platform = 600 - 320 = 280 The answer is (C).
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