Answer
a)$14\text{million}$.
b)$79.3\text{million}$.
Work Step by Step
According to the data:
a) $n(\text{widowed})+n(\text{divorced})=3.1\text{million}+10.9\text{million}=14\text{million}$.
b) $n(\text{married})+n(\text{widowed})+n(\text{divorced})=65.3\text{million}+3.1\text{million}+10.9\text{million}=79.3\text{million}$.
