Answer:
28 people can sit on 7 tables in a row
Explanations:
Number of people that can sit on a square table = 4
The greatest number of people that can sit on 7 tables = 7 x ( Number of people that can sit on a table)
The greatest number of people that can sit on 7 tables in a row = 7 x 4
The greatest number of people that can sit on 7 tables in a row = 28