We know from the triangle inequality that the last side, $s$, fulfills $s\textless12+13=25$. Adding $12+13$ to both sides of the inequality, we get $s+12+13\textless25$, and because $s+12+13$ is the perimeter of our triangle, (B) 50 is our answer. 
What is the smallest whole number larger than the perimeter of any triangle with a side of length $12$ and a side of length $13$? (adapted from 2015 AMC8, Question 8) 
Options:
* $$25$$ 
* $$50$$ 
* $$51$$ 
* $$49$$ 
* $$33$$ 