The dimensions of a rectangular floor of a room when increased by 4 metres become in the ratio 4 : 3 and when decreased by 4 metres become in the ratio 2 : 1. What are the dimensions of the floor of the room?
1
18 m × 24 m
2
12 m × 8 m
3
16 m × 12 m
4
18 m × 22 m
5
Not attempted