Problem 11-19Prepare a master production schedule for industrial pumps in the manner of the following table. Use the MPS rule to "schedule production when the projected on-hand inventory would be less than 10 without production." Suppose that a production lot size of 70 pumps is used. (Leave no cells blank - be certain to enter "0" wherever required.)

JuneJuly

Initial Inventory = 6012345678

Forecast30 30 30 30 40 40 40 40

Customer orders (committed)31 20 10 4 2

Projected on-hand inventory

MPS

ATP

Hint: Restate table and follow directions, MPS may produce earlier but not later in periods

Problem 11-3Planners for a company that makes several models of skateboards are about to prepare the aggregate plan that will cover six periods. They have assembled the following information:

Period123456Total

Forecast2002003004005002001,800

Costs

Output

Regular time=$2 per skateboard

Overtime=$3 per skateboard

Subcontract=$6 per skateboard

Inventory=$1 per skateboard per period on average inventory

Back orders=$5 per skateboard per period

They have learned that one person is about to retire from the company. Rather than replace that person, they would like to stay with the smaller workforce and use overtime to make up for the lost output. The reduced regular-time output is 280 units per period. The maximum amount of overtime output per period is 40 units.

are allowed per period. Subcontracting is $6 per unit, and overtime is $3 per unit. (Hint: Use Suppose you can use a combination of overtime and subcontracting, but you cannot use subcontracting in more than two periods. Up to 50 units of subcontracting and either 0 or 40 units of overtime subcontracting only when overtime units are not sufficient to decrease backlogs to 80 units or less.) Plan for an ending inventory balance of 0 for period 6. Prepare a plan that will minimize total cost. (Negative amounts should be indicated by a minus sign. Leave no cells blank - be certain to enter "0" wherever required. Omit the "$" sign in your response.)

Period123456Total

Forecast2002003004005002001,800

Output

Regular

Overtime

Subcontract

Output-

Forecast

Inventory

Beginning

Ending

Average

Backlog

Costs:

Output

Regular$ $

Overtime

Subcontract

Inventory

Backorder

Total$ $

Hint:Redo table and use subcontracting when overtime is not sufficient, on the basis that subcontracting is more expensive than overtime.

Period123456Total

Forecast2002003004005002001,800

Output

Regular2802802802802802801,680

Subcontract002050500120

Output-

Forecast80800(70)(170)80

Inventory

Beginning080160160900

Ending801601609000

Average40120160125450490

Backlog000080080

Costs:

Regular @ 2$560560560560560560$3,360

Subcontract @ 6001203003000720

Inventory @ 140120160125450490

Backorder @ 500004000400

Total$6006808409851,305560$4,970

Again, the reason why subcontracting is better before the busy month 5 is that carrying cost is cheaper than backorder cost.

Will you please write the answer on the box. Dont leave the answer blank just write 0Problem 12-17The MRP Department has a problem. Its computer died just as it spit out the following information:Planned order release for item J27 = 640 units in week 2. The firm has been able to reconstruct all the information they lost except the master schedule for end item 565. The firm is fortunate because J27 is used only in 565s. Given the following product structure tree and associated inventory status record information, determine what master schedule entry for 565 was exploded into the material requirements plan that killed the computer. (Leave no cells blank - be certain to enter "0" wherever required.)

Part NumberOn HandLot SizeLead Time

5650Lot-for-lot1 week

X43601201 week

N780Lot-for-lot2 weeks

Y36200Lot-for-lot1 week

J270Lot-for-lot2 weeks

WeekBeg. Inv.12345678

Quantity

Item: #565 LT = 1 wk.Beg. Inv.12345678

Gross requirements

Scheduled receipts

On hand

Net requirements

Planned order receipt

Planned order release

Item: Y36(2) LT = 1 wk.Beg. Inv.12345678

Gross requirements

Scheduled receipts

On hand

Net requirements

Planned order receipt

Planned order release

Item: J27(4) LT = 2 wks.Beg. Inv.12345678

Gross requirements

Scheduled receipts

On hand

Net requirements

Planned order receipt

Planned order release

Master Schedule for #565WeekBeg.Inv.12345678

Quantity180

Week

Item: #565 LT = 1 wk.Beg.Inv.12345678

Gross requirements180

Scheduled receipts

On hand

Net requirements180

Planned order receipt180

Planned order release180

Week

Item: Y36(2) LT = 1 wk.Beg.Inv.12345678

Gross requirements360

Scheduled receipts

On hand0 W0W0w0W0W200

Net requirements160

Planned order receipt160

Planned order release160

Week

Item: J27(4) LT = 2 wks.Beg.Inv.12345678

Gross requirements640

Scheduled receipts

On hand

Net requirements640

Planned order receipt640

Planned order release640