question: Amar takes as much time in running 18 meters as a car takes in covering 48 meters. What will be the distance covered by Amar during the time the car covers 1.8 km?
Options:
(A) 660 m
(B) 650 m
(C) 570 m
(D) 670 m
(E) 680 m
answer: Stream of consciousness: Distance covered by Amar = (18/48)*1800 = 670 m The answer is (D).

q: On 3,000 invested at a simple interest rate 6 p.c.p.a, 900 is obtained as interest in certain years. In order to earn 1,600 as interest on 4,000 in the same number of years, what should be the rate of simple interest?
Options:
(A) 7 p.c.p.a.
(B) 8 p.c.p.a.
(C) 9 p.c.p.a.
(D) Data inadequate
(E) None of these
a: Stream of consciousness: Time = 900100/30006 = 5 years
Rate = 1600100/54000 = 8% The answer is (B).

question: Two trains are moving at 80 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) 6 sec
(B) 7 sec
(C) 7 2/2 sec
(D) 8 sec
(E) 9 sec
answer: Stream of consciousness: 70 + 80 = 150 * 5/18 = 125/3 mps
D = 150 + 100 = 250 m
T = 250 * 3/125 = 6 sec The answer is (A).

q: In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is:
Options:
(A) 3 km/hr
(B) 2 km/hr
(C) 4 km/hr
(D) 6 km/hr
(E) 8 km/hr
a: Stream of consciousness: Speed in still water = 1/2 (11 + 5) kmph = 8 kmph. The answer is (E).

question: If a and b are unique prime integers, which of the following must be odd?
Options:
(A) ab
(B) 2a+2b
(C) 2a2b
(D) 2a / 2b
(E) ab^2
answer: Stream of consciousness: Any number multiplied by 2 has to be an even number. hence The answer is (A).

question: The average mark obtained by 22 candidates in an examination is 48. The average of the first ten is 55 while the last eleven is 40 .The marks obtained by the 11th candidate is ?
Options:
(A) 22
(B) 0
(C) 49
(D) 58
(E) 66
answer:
Stream of consciousness: It is clear that 22 x 48 = 10 x 55 + K + 11 x 40 K = 66 The answer is (E).