Answer:
27
Explanation:
Let the missing number be x then
9 : 10 = x: 30
9/10 = x /30
cross multiply
10x = 9 * 30
x = 270 / 10
x = 27
<span>The League of Nations depended on the cooperation of its members and lacked an enforcement mechanism.
As you can see from WW2, everyone just ignored the LON's policies and did whatever they wanted.</span>
