JAMB - Mathematics (2006 - No. 41)
The cost of renovating a 6 m square room is N540. What is the cost of renovating a 9 m square room?
N1215
N720
N1620
N810
Εξήγηση
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
Cost of renovating a 1m\(^2\) room = 540 / 6
Cost of removing a 9m\(^2\) room
= (540 / 6) * 9
= N810