tolong jawab nomor 20 berserta caranya

terima kasih, semoga bermanfaat

18½ m = Rp. 245⅛
18,5 m = Rp. 245.125
1 m = 245.125 : 18,5
1 m = 13.250

= 26½ m x Rp. 13.250
= 26,5 m x Rp. 13.250
= Rp. 351.125
= Rp. 351⅛