maaf banyak nnanya Hehehe

1 lusin = 12 buah/lembar
1 kodi = 20 buah/lembar
Laku = 300 lembar

Beli kain
= 12 lusin + 20 kodi
= 12 (12) + 20 (20)
= 144 + 400
= 544 lembar

Sisa kain blm terjual
= Beli kain - Laku
= 544 - 300
= 244 lembar

1 kodi = 20 lembar
20 kodi= 400 lembar kain biru

1 lusin = 12 lembar
12 lusin = 144 lembar kain merah

Total kain = 544 lembar
Kain dijual= 300 lembar
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244 lembar (d)