Answer:
Explanation:
Both parts of the ratio can be divided by 9
81/9 = 9
72/9 = 8
The ratio is 9:8
54/48 is also 9:8
54 / 6 = 9
48/6 = 8
The ratio is 9:8
63:56 is also an answer
63 / 7 = 9
56/7 = 8
The ratio is 9:8
The others don't work. You can just look at them to see why.