Simplify the following text for a Grade 4 native English-speaking person.
Original: 20.10 % of all households were made up of individuals and 7.70 % had someone living alone who was 65 years of age or older .
Simplified: 20.10 % of all households were made up of people living alone and 7.70 % had someone living alone who was 65 years of age or older .