Can someone please help with this problem

B. 0.30

Step-by-step explanation:

because it is the age with the most people

with means it will most likely be picked.

180°

step-by-step explanation:

sum of equilateral triangle=180°

< n=60°

< m=120°°[angle supplementary of equilateral angle]

< m+< r+< x=360°(sum of exterior angle of triangle)