Answer:
See explaination and attachment
Step-by-step explanation:
Please kindly check attachment for the step by step solution
If you mean 3 years or 30 months then 3 years would be more since there's 36 months in 3 years. :)
Since there are 3 "2's" and 8 total options, the probability is 3/8 or C.
Check the picture below.
running a perpendicular line like so from the right-angle, makes three similar triangles, the large, containing the smaller ones, and a medium and a small one. Now, using proportions, you can just use there, the medium and smalle to get "x".