The length, breadth and height of a room are in the ratio 12 : 4 : 4. If the breadth and height are halved while the length is doubled, then the total area of the four walls of the room will
Choose the correct choice from the following options
A) (a) remain the same	B) (b) decrease by 13.64%	C) (c) decrease by 15%	D) (d) decrease by 18.75%	E) (e) decrease by 30%
Length (L) = 12   Breadth (B) = 4   Height (H) = 4   Total Area of Walls = 2(BH + LH) = 2*(4*4 + 12*4) = 2*(16+48)= 
<gadget id="calculator">2*(16+48)</gadget>
<output>128</output>
128   Then, Finally   Length (L)= 2*12= 
<gadget id="calculator">2*12</gadget>
<output>24</output>
24   Breadth (B)= 4/2= 
<gadget id="calculator">4/2</gadget>
<output>2</output>
2   Height (H)= 4/2= 
<gadget id="calculator">4/2</gadget>
<output>2</output>
2   Total Area of Walls= 2(BH + LH) = 2*(2*2 + 24*2) = 2*(4+48)= 
<gadget id="calculator">2*(4+48)</gadget>
<output>104</output>
104   % change in Area of four walls= (Final Area-Initial Area)*100 /Initial Area   i.e. % change in Area of four walls = (104-128)*100 /128=- 18.75% ((d) decrease by 18.75%ecrease)   Answer: Option (d) decrease by 18.75%
<result>D</result>
The length, breadth and height of a room are in the ratio 12 : 4 : 4. If the breadth and height are halved while the length is doubled, then the total area of the four walls of the room will