Answer :
15 silver keys,
5 black keys,
11 copper keys,
4 painted
35 total
15 + 11 = 26
26/35 = 0.7428 ≈ 74.28% probability
5 black keys,
11 copper keys,
4 painted
35 total
15 + 11 = 26
26/35 = 0.7428 ≈ 74.28% probability
There is a 74% chance that the key drawn will be silver or copper.
I got this because I added all of them and got a total of 35 and then I took the total of silver and copper keys being, 26 and I divided 26 from 35 and got 74%