question: The average age of 8 men increases by 2 years when two women are included in place of two men of ages 20 and 24 years. Find the average age of the women?
Options:
(A) 5
(B) 10
(C) 50
(D) 40
(E) 30
answer: Stream of consciousness: 20 + 24 + 8 * 2 = 60/2 = 30 The answer is (E).
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question: In a race of 150 m, A gives B a start of 20 m. What distance will be covered by B ?
Options:
(A) 100 m
(B) 130 m
(C) 170 m
(D) 160 m
(E) 180 m
answer: Stream of consciousness: Required distance = (150 - 20) m = 130 m The answer is (B).
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question: A train running at the speed of 30 km/hr crosses a pole in 6 sec. What is the length of the train?
Options:
(A) 20 m
(B) 70 m
(C) 50 m
(D) Cannot be determined
(E) None of these
answer: Stream of consciousness: Speed = 30 * 5/18 = 25/3 m/sec
Length of the train = speed * time = 25/3 * 6 = 50 m The answer is (C).
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question: Divide Rs.32000 in the ratio 1:9?
Options:
(A) 12000, 20000
(B) 12000, 200098
(C) 12000, 20007
(D) 3200, 28800
(E) 12000, 20001
answer:
Stream of consciousness: 1/10 * 32000 = 3200
9/10 * 32000 = 28800 The answer is (D).
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