THe cost of renovating a 6 m square room is N54... - JAMB Mathematics 2006 Question
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
correct option: d
Cost of removing a 6m2 room = N540
Cost of renovating a 1m2 room = 540 / 6
Cost of removing a 9m2 room
= (540 / 6) * 9
= N810
Cost of renovating a 1m2 room = 540 / 6
Cost of removing a 9m2 room
= (540 / 6) * 9
= N810
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