q: A person spends 40% of his salary on food, 25% on house rent, 15% on entertainment and 15% on conveyance. If his savings at the end of the month is Rs. 1200, then his salary per month in rupees is:
Options:
(A) 4000
(B) 24000
(C) 8000
(D) 10000
(E) None of these
a: Stream of consciousness: Total expenditure = 40 + 25 + 15 + 15 = 95%
Saving = (100 - 95) = 5%
5/100 Salary = 1200, Salary = 24000 Rs. The answer is (B).

question: A cricket bat is sold for $900, making a profit of $300. The profit percentage would be
Options:
(A) 24%
(B) 25%
(C) 30%
(D) 50%
(E) 40%
answer: Stream of consciousness: 300/(900 - 300) = 50%. The answer is (D).

q: The average of fifteen results is 593 and that of the first fourteen is 594. The fifteenth result is?
Options:
(A) 575
(B) 602
(C) 579
(D) 586
(E) 592
a: Stream of consciousness: 15 * 593 14 * 594 = 579 The answer is (C).

question: There are 16 teams in a tournament. If during the first round, each team plays every other team exactly once, how many games will be played in the first round?
Options:
(A) 15
(B) 30
(C) 120
(D) 240
(E) 256
answer: Stream of consciousness: Number of ways to pick 2 teams from a total of 16 = 16C2 = 16!/14!*2! = 120. Hence The answer is (C).

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).

q: How much more would Rs.20000 fetch, after two years, if it is put at 20% p.a. compound interest payable half yearly than if is put at 20% p.a. compound interest payable yearly?
Options:
(A) 482
(B) 887
(C) 299
(D) 277
(E) 200
a:
Stream of consciousness: 20000(11/10)4 - 20000(6/5)2 = 482 The answer is (A).