3. A Juarez, Mexico, manufacturer of roofing supplies has developed monthly forecasts for a family of products. Data for the 6-month period January to June are presented in the table below. There are 8 hours of production per day. a) The firm would like to begin development of an aggregate plan. For this plan, plan 5, the firm wishes to maintain a constant workforce of 6, using subcontracting to meet remaining demand. Evaluate this plan. To determine whether this plan is desirable, first calculate demand per day for each month (enter your responses rounded to the nearest whole number). Table 1 Production Demand Month Avg Dem Per Prod. Day Days Forecast 1 January 22 800 2 February 1 18 650 3 March 21 850 4 April 21 1,100 5 May 22 1,200 6 June 20 1,250 The production rate per day = Other data Inventory carrying cost Subcontracting cost per unit $12 per unit Average pay rate Overtime pay Rate Labor-hours per unit Cost of increasing daily production rate (hiring & training) Cost of decreasingdaily production rate (layoffs units. (Enter your response as a whole number.) Fill in the table below. (Enter your responses as whole numbers.) $8 per unit per month $5 per hour ($40 per day) $7 per hour (above 8 brs per day) 1.6 brs per unit $300 perunit $600 per unit Month. Demand Regular Production Subcontract (Units) 1 January 800 2 February 650 3 March 850 4 April 1,100 5 May 1,200 6 June 1,250 The total regular production cost S The total subcontracting cost $ Total cost with plan 5-S (Enter your response as a whole number.) (Enter your response as a whole number.) (Enter your response as a whole number)