question: The length of a rectangle is increased by 25% and its breadth is decreased by 15%. What is the effect on its area?
Options:
(A) 1288
(B) 1299
(C) 10625
(D) 10000
(E) 2887
answer: Stream of consciousness: 100 * 100 = 10000
125 * 85 = 10625 The answer is (C).
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question: What will come in place of the x in the following Number series? 8, 10, 14, 22, 38, x
Options:
(A) 66
(B) 68
(C) 70
(D) 72
(E) 74
answer: Stream of consciousness: 8
8 x 2 - 6 = 10
10 x 2 - 6 = 14
14 x 2 - 6 = 22
22 x 2 - 6 = 38
38 x 2 - 6 = 70 The answer is (C).
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question: Two trains are moving at 40 kmph and 70 kmph in opposite directions. Their lengths are 150 m and 100 m respectively. The time they will take to pass each other completely is?
Options:
(A) 41/2 sec
(B) 5/2 sec
(C) 61/2 sec
(D) 71/6 sec
(E) 49/6 sec
answer: Stream of consciousness: 70 + 40 = 110 * 5/18 = 275/9mps
D = 150 + 100 = 250 m
T = 250 * 9/275 = 49/6 sec The answer is (E).
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question: Find the simple interest on Rs.450 for 8 months at 5 paisa per month?
Options:
(A) 277
(B) 270
(C) 180
(D) 266
(E) 121
answer:
Stream of consciousness: I = (450*8*5)/100 = 180 The answer is (C).
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