tolong bantuin saya yh jwb no 4 yh pliss pake cara semoga yg jwb mendapat pahala amin

Banyaknya kain = 1 1/4 kodi
                          = 5/4 kodi

Harga 1/2 kodi = Rp. 240.000
Hara 1 kodi = 2 x  Rp. 240.000
                   = Rp. 480.000

Harga Beli = 5/4 kodi x Rp. 480.000 / kodi
                  = Rp. 600.000

Keuntungan = 12,5% x Rp. 600.000
                    = Rp. 75.000

Harga jual = Harga beli + keuntungan
                 = Rp. 600.000 + Rp. 75.000
                 = Rp. 675.000