The production line employees at Grummins Engine work four days per week, 10 hours per day. Each day of the week, the following minimum numbers of...

The production line employees at Grummins Engine work four days per week, 10 hours per day. Each day of the week, the following minimum numbers of line employees are needed: Monday through Friday, 70 employees; Saturday and Sunday, 40 employees. Grummins employs 120 line employees. Determine how to maximize the number of consecutive days off received by these employees. For example, a worker who gets Sunday, Monday, and Wednesday off receives two consecutive days off.

Maximum number of consecutive days off: ______?