October 2018 2 90 Report
Diketahui harga sepasang sepatu dua kali harga sepasang sandal. seorang pedagang membeli 4 pasang sepatu dan 3 pasang sandal. pedagang tersebut harus membayar Rp 275.000.

a. buatlah model matematika dari keterangan di atas
b. selesaikan model tersebut, kemudian hitunglah harga 3 pasang sepatu dan 5 pasang sandal
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