Rationale: Area of the outer rectangle = 25 16 = 400 m2
Area of the inner rectangle = 21 12 = 252 m2
Required area = (400 252) = 148 m2
The answer: (D)
Question: The floor of a rectangular room is 21 m long and 12 m wide. The room is surrounded by a veranda of width 2 m on all its sides. The area of the veranda is :
Options:
(A) 124 m2
(B) 128 m2
(C) 138 m2
(D) 148 m2
(E) None of these

Rationale: T = 30/36 * 18/5 = 3 se
The answer: (C)
Question: In what time will a railway train 30 m long moving at the rate of 36 kmph pass a telegraph post on its way?
Options:
(A) 5 sec
(B) 4 sec
(C) 3 sec
(D) 6 sec
(E) 1 sec

Rationale: 20 + 24 + 8 * 2 = 60/2 = 30
The answer: (C)
Question: The average age of 8 men increases by 2 years when two women are included in place of two men of ages 20 and 24 years. Find the average age of the women?
Options:
(A) 11
(B) 12
(C) 30
(D) 98
(E) 15