hotel bintang nusantara menyediakan dua tipe kamar. peserta diklat gelombang 1 menempati 5kamar tipe Adanya 4 kamar tipe B dengan harga Rp. 2.500.000.dua hari k

[tex]misal \:tipe \: a = x \: dan \: tipe \: b = y \\ 5x + 4y = 2500000 (x1) \\ 3x + 2y = 1400000(x2) \\ = = = = = = = = = = = = = \\ 5x + 4y = 2500000 \\ 6x + 4y = 2800000 \\ = = = = = = = = = = = = = - \\ - x = - 300000 \\ x = 300000 \\ = > 3x + 2y = 1400000 \\ 3(300000) + 2y = 1400000 \\ 2y = 1400000 - 900000 \\ y = \frac{500000}{2} \\ y = 250000 \\ maka \: harga \:3kamar \: a \: dan \: 4kamar \: b \: dl \\ = 3x + 4y \\ = 3(300000) + 4(250000) \\ = 900000 + 1000000 \\ = rp.1900000[/tex]