Reasoning: Speed = 63 * 5/18 = 35/2 m/sec
Time taken = 280 * 2/35 = 16 sec
Ans: (B)
Question: A train 280 m long, running with a speed of 63 km/hr will pass a tree in?
Options:
(A) 22 sec
(B) 16 second
(C) 77 sec
(D) 55 sec
(E) 17 sec

Rationale: 2/3 * 6/7 * 1/3 * 3/8 = 36/504 = 3/42
The answer: (E)
Question: The compound ratio of 2/3, 6/7, 1/3 and 3/8 is given by?
Options:
(A) 7/98
(B) 1/48
(C) 1/98
(D) 1/96
(E) 3/42

Reasoning: P = (P*30*R)/100
R = 3 1/3%
Ans: (A)
Question: At what rate percent on simple interest will a sum of money double itself in 30 years?
Options:
(A) 3 1/9%
(B) 3 7/3%
(C) 7 1/3%
(D) 5 1/3%
(E) 1 1/3%

Rationale: Here both numbers are less than 100. So they are deficient of - 5 and - 3 compared with 100. So
The answer: (E)
Question: Find 95 ×× 97
Options:
(A) 92/198
(B) 92/12
(C) 92/13
(D) 92/10
(E) 92/15

Reasoning: Answer = B = 1
20 - 19 = 30-29 = 40-39 = 50-49 = 1
Ans: (B)
Question: If X and Y are both positive two-digit integers and share no digits, and X > Y, what is the smallest possible value of X - Y?
Options:
(A) 0
(B) 1
(C) 2
(D) 3
(E) 9

Reasoning: 4/10+9/X = 1/x = 15
1/10+1/15 = 1/6 = 6 days
Ans: (A)

Question: A can do a piece of work in 10 days. He works at it for 4 days and then B finishes it in 9 days. In how many days can A and B together finish the work?
Options:
(A) 6
(B) 8
(C) 12
(D) 15
(E) 20