question: How much time will it take for an amount of 500 to yield 100 as interest at 5% per annum of simple interest?
Options:
(A) 3 year
(B) 4 year
(C) 6 year
(D) 5 year
(E) 7 year
answer: Stream of consciousness: Time = (100 x 100)/(500 x 5) years = 4 years. The answer is (B).

q: If P(A) = 2/15, P(B) = 4/15, and P(A B) = 12/15 Find P(B|A)
Options:
(A) 1/2
(B) 2/3
(C) 3/2
(D) 4/5
(E) 6
a: Stream of consciousness: P(B|A) = P(A B)/P(A)
P(B|A) = (12/15)/(2/15) = 6. The answer is (E).

question: Efrida and Frazer who live 10 miles apart, meet at a restaurant that is directly north of Efrida's home and directly east of Frazer's home. If the restaurant is three miles closer to Efrida's home, than to Frazer's home, how many miles is the restaurant from Frazer's home?
Options:
(A) 6
(B) 7
(C) 8
(D) 10
(E) 11
answer: Stream of consciousness: It's a simple geometry problem. Look at the diagram below: The answer is (B).

q: A train 100 meters long completely crosses a 300 meters long bridge in 45 seconds. What is the speed of the train is?
Options:
(A) 32
(B) 28
(C) 299
(D) 277
(E) 21
a: Stream of consciousness: S = (100 + 300)/45 = 400/45 * 18/5 = 32 The answer is (A).

question: The distance between West-Town to East-Town is 14 kilometers. Two birds start flying simultaneously towards one another, the first leaving from West-Town at a speed of 5 kilometers per minute and the second bird, leaving from East-Town, at a speed of 2 kilometers per minute. What will be the distance, in kilometers, between the meeting point and West-Town?
Options:
(A) 3.
(B) 7.
(C) 10.
(D) 12.
(E) 15.
answer: Stream of consciousness: Time taken by the birds to meet = 14/(5+ 2) = 2 mins
Distance traveled by the bird traveling from West-Town = 5 * 2 = 10 The answer is (C).

question: A train 210 m long, running with a speed of 63 km/hr will pass a tree in?
Options:
(A) 18 sec
(B) 16 sec
(C) 76 sec
(D) 12 sec
(E) 17 sec
answer:
Stream of consciousness: Speed = 63 * 5/18 = 35/2 m/sec
Time taken = 210 * 2/35 = 12 sec The answer is (D).