Question
Quantitative Aptitude Question on Mensuration
The length, breadth and height of a room are in the ratio of 3:2:1. If breadth and height are halved while the length is doubled, then the total area of the four walls of the room will:
A
remain the same
B
decrease by 13.64%
C
decrease by 15%
D
decrease by 30%
Answer
decrease by 30%
Explanation
Solution
The correct option is (D):decrease by 30%