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Kelas 7 MatematikaBab Perbandingan dan Aritmatika Sosial
Tambahan pekerja
= pekerja awal . terhenti/sisa waktu
= 15 pekerja . 4 hari / (40 - 12 - 4) hari
= 15 . 4 / 24
= 2,5
= 2 atau 3 orang