The floor of a rectangular room is 18 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) 126 m2
(C) 136 m2
(D) 158 m2
(E) None of these

Area of the outer rectangle = 22 16 = 352 m2
Area of the inner rectangle = 18 12 = 216 m2
Required area = (352 216) = 136 m2 So the answer is: (C).

The floor of a rectangular room is 20 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) 144 m2
(B) 120 m2
(C) 108 m2
(D) 158 m2
(E) None of these

Area of the outer rectangle = 24 16 = 384 m2
Area of the inner rectangle = 20 12 = 240 m2
Required area = (304 180) = 144 m2 So the answer is: (A).

The area of a triangle is with base 10m and height 5m?
Options:
(A) 11
(B) 25
(C) 787
(D) 122
(E) 12

1/2 * 10 * 5 = 25 m2 So the answer is: (B).

A sells a Cricket Bat to B at a profit of 20%. B sells it to C at a profit of 25%. If C pays $237 for it, the cost price of the Cricket Bat for A is:
Options:
(A) 150
(B) 120
(C) 158
(D) 160
(E) 210
125% of 120% of A = 237
125/100 * 120/100 * A = 237
A = 237 * 2/3 = 158. So the answer is: (C).