How many square meters does a painter can do a first coating of latex paint in painting a concrete wall per 8 hours.?

A painter can typically cover about 100 to 150 square meters of a concrete wall with a first coat of latex paint in an 8-hour workday, depending on factors like the texture of the wall, the painter's skill level, and the type of paint used. Proper preparation and application techniques can also influence this coverage rate.