question: Two trains are moving at 50 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) 7 1/6 sec
(B) 7 3/2 sec
(C) 7 1/7 sec
(D) 7 1/2 sec
(E) 3 3/2 sec
answer: Stream of consciousness: 70 + 50 = 120 * 5/18 = 100/3 mps
D = 150 + 100 = 250 m
T = 250 * 3/100 = 15/2 = 7 1/2 sec The answer is (D).

q: John makes $60 a week from his job. He earns a raise and now makes $90 a week. What is the % increase?
Options:
(A) 16%
(B) 50%
(C) 17%
(D) 17.61%
(E) 17.56%
a: Stream of consciousness: Increase = (30/60)*100 = (3/6)*100 = 50%. The answer is (B).

question: The number N is 5,2H7, where H represents the ten's digit. If N is divisible by 3, what is the value of H?
Options:
(A) 3
(B) 8
(C) 5
(D) 6
(E) 4
answer: Stream of consciousness: If the number is divisible by 3, the sum of the digits must also be divisible by 3. Only 4 yields such a number. The answer is (E).

q: Divide Rs.32000 in the ratio 1:9?
Options:
(A) 12000, 20000
(B) 12000, 200098
(C) 12000, 20007
(D) 3200, 28800
(E) 12000, 20001
a: Stream of consciousness: 1/10 * 32000 = 3200
9/10 * 32000 = 28800 The answer is (D).

question: An amount of money is to be divided among P, Q and R in the ratio of 4 : 9 : 16. If R gets 4 times more than P, what is Q's share in it?
Options:
(A) 1,800
(B) 2,700
(C) 3,600
(D) Data inadequate
(E) None of these
answer: Stream of consciousness: Here, neither the total amount nor the individual amount is given. So the share of Q cannot be determine The answer is (D).

question: Find the simple interest on Rs.500 for 9 months at 6 paisa per month?
Options:
(A) 238
(B) 270
(C) 987
(D) 167
(E) 121
answer:
Stream of consciousness: I = (500*9*6)/100 = 270 The answer is (B).