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Kelas 7 MatematikaBab Perbandingan dan Aritmatika Sosial
Tambahan pekerja
= jumlah pekerja . terhenti/sisa waktu
= 12 . 6 / (20 - 5 - 6)
= 72/9
= 8 orang
Banyak pekerja seluruhnya
= 12 + 8
= 20 orang