To find the percertage of families have no children you need to find the total numer of families:
[tex]35.54+14.32+13.28+5.13+1.97=70.24[/tex]
As the total of families is 70.24 millions you consider this data as the 100% of the families.
Then, you calculate the percentage of families have no children as follow:
Families have no children: 35.54million
Total number of families: 70.24 million
[tex]35.54\cdot\frac{100}{70.24}=50.59[/tex]Then, the percentage of families have no children is approximately 50.6%
