Pembahasan
1kodi = 20-12=8lusin
5 1/2gros = 11/2×144= 11×72= 792buah
6,6kodi = 66/10×20= 1320/10=132
20lusin = 20×12= 240buah
792buah-132buah+240buah= 900buah
Jadikan lusin bagi 12
900/12= 75lusin
Opsi D
Maaf kalau salah
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Pembahasan
1kodi = 20-12=8lusin
5 1/2gros = 11/2×144= 11×72= 792buah
6,6kodi = 66/10×20= 1320/10=132
20lusin = 20×12= 240buah
792buah-132buah+240buah= 900buah
Jadikan lusin bagi 12
900/12= 75lusin
Opsi D
Maaf kalau salah