Latihan soal 1

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Dokumen ini membahas tentang analisis biaya dari berbagai metode konstruksi jembatan dan perhitungan modal bagi individu serta penyewa alat berat. Terdapat perbandingan tiga metode kerja jembatan berdasarkan nilai sekarang serta estimasi waktu untuk mencapai modal yang diinginkan dengan tingkat bunga tertentu. Juga termasuk analisis biaya dan manfaat dari investasi alat berat dan penyewaan truk dalam konteks kontraktor.

1.Sebuah proyek jembatan selama 5 tahun dapat dikerjakan dengan 3 metode kerja sebagai
berikut
Metode I (dengan perancah tetap)
Membeli perancah seharga $ 100000
Biaya tenaga kerja per th $ 50000
Biaya bahan habis pakai per th $ 5000
Pada tahun ke 3 diperlukan biaya tambahan sebesar $ 10000
Harga jual lagi perancah $ 10000
Metode II (dengan perancah bergerak)
Tanpa membeli alat tetapi dengan sewa alat
Harga sewa alat per th $ 30000 hanya pada tahun ke-1,2, & 3 saja
tahun ke 4 dan 5 tidak menyewa lagi karena sudah tidak membutuhkan
Pada th ke 4 dan 5 membutuhkan biaya tambahan masing-masing sebesar $ 10000
Biaya tenaga kerja per th $ 55000
Baiya bahan habis pakai per th $ 5000
Metode III (dengan peluncuran bertahap)
Membeli alat peluncuran $ 110000
Biaya tenaga kerja per th $ 35000
Biaya bahan habis pakai $ 5000
Harga jual lagi alat $ 5000
Manakah metode kerja yang paling ekonomis, jika i = 10% ?
(sehubungan usia proyek yang sama,maka gunakanlah metode METODE NILAI SEKARANG)
2. Saat ini Bulan Januari 2016, Saudara akan mempertimbangkan untuk mempunyai modal
minimum sebesar Rp 12 juta. Saat ini diperkirakan Saudara dapat menabung sebesar Rp. 660000
setiap bulan . Apabila tingkat bunga sekarang konstan sebesar 0,85% per bulan, maka kapan
Saudara akan mempunyai modal tersebut ?
3. Sebuah kontraktor mengerjakan kegiatan ekonomi berikut.
 membeli buldozer Rp 325 juta
 nilai jual lagi Rp 25 juta di tahun ke 5
 biaya pemeliharaan dan pekerja Rp 3,5 juta per tahun
 di tahun ke 3, 4, dan 5 ada biaya administrasi khusus Rp 1 juta per tahun
 usia ekonomis n=5 th dan i=12%
Hitung biaya yang harus disediakan oleh perusahaan kontraktor dengan metode
a. tahunan ekivalen,
b. nilai sekarang, PV
4.Sebuah perusahaan penyewaan alat-alat berat melakukan kegiatan ekonomi sbb:
 membeli 10 bh truk (1 bh truk harganya @ Rp 75 juta)
 membeli peralatan bantu Rp 100 juta
 di tahun ke 3 membeli 6 bh truk lagi ( Rp 75 juta per bh)
 ongkos sopir dan teknisi Rp 0,75 juta per tahun
 ongkos administasi Rp 1,3 juta per tahun
 pemasukan dari menyewakan truk adalah sbb:
a. dengan 10 bh truk (pembelian awal) mendapatkan Rp 200 juta per tahun sejak tahun pertama
b. dengan 6 bh truk (pembelian th ke 3) mendapatkan Rp 170 juta per tahun tahun ke 4 & 5
Jika n=5 tahun, hitung tingkat suku bunga yang berlaku saat pengembalian modal

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Latihan soal 1

1. 1.Sebuah proyek jembatan selama 5 tahun dapat dikerjakan dengan 3 metode kerja sebagai berikut Metode I (dengan perancah tetap) Membeli perancah seharga $ 100000 Biaya tenaga kerja per th $ 50000 Biaya bahan habis pakai per th $ 5000 Pada tahun ke 3 diperlukan biaya tambahan sebesar $ 10000 Harga jual lagi perancah $ 10000 Metode II (dengan perancah bergerak) Tanpa membeli alat tetapi dengan sewa alat Harga sewa alat per th $ 30000 hanya pada tahun ke-1,2, & 3 saja tahun ke 4 dan 5 tidak menyewa lagi karena sudah tidak membutuhkan Pada th ke 4 dan 5 membutuhkan biaya tambahan masing-masing sebesar $ 10000 Biaya tenaga kerja per th $ 55000 Baiya bahan habis pakai per th $ 5000 Metode III (dengan peluncuran bertahap) Membeli alat peluncuran $ 110000 Biaya tenaga kerja per th $ 35000 Biaya bahan habis pakai $ 5000 Harga jual lagi alat $ 5000 Manakah metode kerja yang paling ekonomis, jika i = 10% ? (sehubungan usia proyek yang sama,maka gunakanlah metode METODE NILAI SEKARANG) 2. Saat ini Bulan Januari 2016, Saudara akan mempertimbangkan untuk mempunyai modal minimum sebesar Rp 12 juta. Saat ini diperkirakan Saudara dapat menabung sebesar Rp. 660000 setiap bulan . Apabila tingkat bunga sekarang konstan sebesar 0,85% per bulan, maka kapan Saudara akan mempunyai modal tersebut ? 3. Sebuah kontraktor mengerjakan kegiatan ekonomi berikut.  membeli buldozer Rp 325 juta  nilai jual lagi Rp 25 juta di tahun ke 5  biaya pemeliharaan dan pekerja Rp 3,5 juta per tahun  di tahun ke 3, 4, dan 5 ada biaya administrasi khusus Rp 1 juta per tahun  usia ekonomis n=5 th dan i=12% Hitung biaya yang harus disediakan oleh perusahaan kontraktor dengan metode a. tahunan ekivalen, b. nilai sekarang, PV 4.Sebuah perusahaan penyewaan alat-alat berat melakukan kegiatan ekonomi sbb:  membeli 10 bh truk (1 bh truk harganya @ Rp 75 juta)  membeli peralatan bantu Rp 100 juta  di tahun ke 3 membeli 6 bh truk lagi ( Rp 75 juta per bh)  ongkos sopir dan teknisi Rp 0,75 juta per tahun  ongkos administasi Rp 1,3 juta per tahun  pemasukan dari menyewakan truk adalah sbb: a. dengan 10 bh truk (pembelian awal) mendapatkan Rp 200 juta per tahun sejak tahun pertama b. dengan 6 bh truk (pembelian th ke 3) mendapatkan Rp 170 juta per tahun tahun ke 4 & 5 Jika n=5 tahun, hitung tingkat suku bunga yang berlaku saat pengembalian modal

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Latihan soal 1

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