The cost of renovating a 6 m square room is N540. What is the cost of renovating a 9 m square room?
A
N1215
B
N720
C
N1620
D
N810
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
Cost of removing a 6m\(^2\) room = N540
Cost of renovating a 1m\(^2\) room = 540 / 6
Cost of removing a 9m\(^2\) room
= (540 / 6) * 9
= N810
Source: Myschool Past Questions Archive (Record #9039)