JAWABAN MANAJEMEN OPERASI LANJUTAN
AGREGATE PLANNING
WRITTER By AHYAR SUHENDAR
QUANTUM CORPORATION
(SEASONAL PATTERN)
A. Level Production Strategy
| MONTH | DEMAND | PRODUCTION | INVENTORY |
| January | 1000 | 1000 | 0 |
| February | 400 | 400 | 600 |
| Maret | 400 | 400 | 1200 |
| April | 400 | 400 | 1800 |
| Mei | 400 | 400 | 2400 |
| Juni | 400 | 400 | 3000 |
| Juli | 500 | 500 | 3500 |
| Agustus | 500 | 500 | 4000 |
| September | 1000 | 1000 | 4000
|
| Oktober | 1500 | 1500 | 3500 |
| November | 2500 | 2500 | 2000 |
| Desember | 3000 | 3000 | 0 |
| Total | 12000 | 12000 | 26000 |
Total Cost = (1 X 26.000) + (12.000 X 10)
= 26.000 + 120.000
= $ 146.000
B. Chase Production Strategy
| MONTH | DEMAND | PRODUCTION | Woked Need | Worked Hired | Worked Fired |
| January | 1000 | 1000 | 10 | 0 | 0 |
| February | 400 | 400 | 4 | 0 | 6 |
| Maret | 400 | 400 | 4 | 0 | 0 |
| April | 400 | 400 | 4 | 0 | 0 |
| Mei | 400 | 400 | 4 | 0 | 0 |
| Juni | 400 | 400 | 4 | 0 | 0 |
| Juli | 500 | 500 | 5 | 1 | 0 |
| Agustus | 500 | 500 | 5 | 0 | 0 |
| September | 1000 | 1000 | 10 | 5 | 0 |
| Oktober | 1500 | 1500 | 15 | 5 | 0 |
| November | 2500 | 2500 | 25 | 10 | 0 |
| Desember | 3000 | 3000 | 30 | 5 | 0 |
| Total | 12000 | 12000 |
| 26 | 6 |
Total Cost = Regular Production + Reuirement Cost + Firing Cost
= ( 12.000 X 10) + (26 X 1000) + (6 X 500)
= 120.000 + 26.000 + 3000
= $ 149.000
C Keterangan Soal : Menambah dan mengurangi karyawan tidak boleh lebih dari 5 orang
| MONTH | DEMAND | PRODUCTION | Woked Need | Worked Hired | Worked Fired |
| January | 1000 | 1000 | 10 | 0 | 0 |
| February | 400 | 400 | 4 | 0 | 5 |
| Maret | 400 | 400 | 4 | 0 | 1 |
| April | 400 | 400 | 4 | 0 | 0 |
| Mei | 400 | 400 | 4 | 0 | 0 |
| Juni | 400 | 400 | 4 | 0 | 0 |
| Juli | 500 | 500 | 5 | 1 | 0 |
| Agustus | 500 | 500 | 5 | 0 | 0 |
| September | 1000 | 1000 | 10 | 5 | 0 |
| Oktober | 1500 | 1500 | 15 | 5 | 0 |
| November | 2500 | 2500 | 25 | 5 | 0 |
| Desember | 3000 | 3000 | 30 | 5 | 0 |
| Total | 12000 | 12000 |
| 21 | 6 |
Total Cost = Regular Production + Reuirement Cost + Firing Cost
Kapasitas Produksi : 11.100 ( Diadapat dari penjumlahan produksi dengan inventory untuk bulan ke 2)
Penulis menggunakan kasus sebagain overtime (karena ada pembatasan dalam overtime yaitu 300 unit) sisanya di sub contrak yaitu 600 unit.
Total Cost = Regular production + Requirement Cost + Firing Cost + Overtime Cost + Subcontrak Coct
= (11.100 X 10) + (21 X 1000) + (6 X 500) + (300 X 15) + (600 X 25)
= 111.000 + 21000 + 3000 + 4500 + 15000
= 154.500
Perbandingan ke 3 Strategy adalah sebagai berikut :
| LEVEL PRODUCTION STRATEGY | MIX STRATEGY | CHASE STRATEGY |
| $142.00 | $154.500 | $149.00 |
Kesimpulan :
Berdasarkan kepada ketiga strategy yang telah di hitung yaitu dari Level Production Strategy merupakan strategy yang tepat karena memiliki total cost yang sedikit yaitu $ 142.000 dibandingkan dengan Mix strategy dan Level strategy yaitu $ 154.500 dan $ 149.000. karena perusahaan harus menekan biaya dari suatu perusahaan.
( Jawabannya dikoreksi dulu takut salah ya)
