Every worker works five consecutive days, and then takes two days off, repeating this pattern indefinitely. How can we minimize the number of workers that staff the restaurant

Workforce planning: Consider a restaurant that is open seven days
a week. Based on past experience, the number of workers needed on a particular
day is given as follows:
Day Mon Tue Wed Thu Fri Sat Sun
Number 14 13 15 16 19 18 11
Every worker works five Every worker works five consecutive days, and then takes two days off, repeating