Question
Quantitative Ability and Data Interpretation Question on Number Systems
If the length, breadth and height of the room are in the ratio 3:2:1. The breadth and height of the room are halved and length of the room is doubled. Then area of the four walls of the room will,
A
decrease by 13.64%
B
decrease by 15%
C
decrease by 18.75%
D
decrease by 30%
Answer
decrease by 30%
Explanation
Solution
The correct option is (D): decrease by 30%.