I explain:

The RIA News:
According to the survey, 38% of respondents say that they are dissatisfied with the condition of their home. Pretentions are most often made to the cleaning of entrances (38%), the condition of stairs (37%), walls and ceilings (36%), sewage and sanitation (33%).

Why elementary algebra never works with social media? The enquiries?! to

Because you think that one respondent is one claim. But in this survey, one person may be dissatisfied with several things.