Please Show me and explain where I made calculation erros on my attached Excel Photos for the following problem. You have been asked to build the aggregate planning schedule for your factory for the next six months and to determine the best option.

This chart provides the variables and cost for each variable.

Variables Cost

Inventory carrying cost $$7$ per unit per month

Subcontracting cost $$25$ per unit

Average pay rate $$12$ per hour $(8$ hours per day$)$

Overtime pay rate $$18$ per hour $($above $8$ hours per day$)$

Labor$-$hours needed to produce one unit $1\mathrm{.}5$ hours per unit

Units per day produced $50$

Beginning inventory $0$

Planned ending inventory $0$

Lost sales per unit $$30$

This chart provides the demand for the product and the number of production days per month.

Months Demand Production Days

January $120022$

February $80018$

March $60021$

April $150021$

May $130022$

June $120020$

Complete the steps in each section and then submit your assignment for grading. Submit one spreadsheet containing a tab for each step.

Step $1$: Prepare Your Aggregate Plan

Use the Excel OM Aggregate Planning spreadsheet and the data to prepare your aggregate plan. Produce a graph of your plan. The intent is to use a level strategy $($or level scheduling$)$ with no overtime, no safety stock, and no subcontractors.

Hint $1-$ Consider that it takes $1\mathrm{.}5$ hours to produce a unit when determining your cost per unit for average and overtime pay.

Hint $2-$ To determine regular time production, you need to multiply the units per day produced by the number of production days.

Continue to Step $2$: Update Your Aggregate Plan Using Overtime

Step $2$: Update Your Aggregate Plan Using Overtime

In the plan produced in Step $1,$ the production rate did not meet the total demand. If you were able to use overtime to meet the shortfall, what would your aggregate plan look like?

Use the Excel OM Aggregate Planning spreadsheet and the data to prepare an updated aggregate plan.

Continue to Step $3$: Update Your Aggregate Plan Using Outsourcing

Step $3$: Update Your Aggregate Plan Using Outsourcing

Instead of paying overtime, you might be able to outsource the shortfall in production. Use the Excel OM Aggregate Planning spreadsheet and the data to prepare an updated aggregate plan using outsources instead of paying overtime.

Continue to Step $4$: Summarize and Submit

Step $4$: Summarize and Submit

On a fourth tab of the spreadsheet, summarize your cost and determine which of the three options produces the lowest overall cost. Be sure to provide a detailed analysis along with your summary data.

Submit one spreadsheet containing a tab for each step. Save your assignment using a naming convention that includes your first and last name and the activity number $($or description$).$ Do not add punctuation or special characters.

Review the Problems Rubric for detailed grading information.