Super City Discount Department Store Is Open 24 Hours a Day.The

Essay

Super City Discount Department Store is open 24 hours a day.The number of cashiers need in each four hour period of a day is listed below. $\begin{array} { cc } Period&\text{Cashiers Needed}\\\hline10 \text { p.m. to } 2 \text { a.m. } & 8 \\ 2 \text { a.m. to } 6 \text { a.m. } & 4 \\ 6 \text { a.m. to } 10 \mathrm { a } . \mathrm { m } & 7 \\ 10 \mathrm { a } . \mathrm { m } . \text { to } 2 \mathrm { p } . \mathrm { m } . & 12 \\ 2 \mathrm { p } . \mathrm { m } \text { to } 6 \mathrm { p } . \mathrm { m } . & 10 \\ 6 \mathrm { p } . \mathrm { m } . \text { to } 10 \mathrm { p.m } & 15 \end{array}$ If cashiers work for eight consecutive hours,how many should be scheduled to begin working in each period in order to minimize the number of cashiers needed?