Question

Bu Aini membeli 5 kg apel dan 3 kg jeruk dengan harga rp270.000 jika Harga apel 3 kali harga jeruk Berapa harga masing-masing​

Answer 1

[tex]j = jeruk \\ a = apel = 3j \\ \\ Harga \: jeruk\\ 5a + 3j = 270.000 \\ 5(3j) + 3j = 270.000 \\ 15 \: j + 3j = 270.000 \\ 18j = 270.000 \\ j = 15.000 \\ \\ Harga \: apel = 3j \\ 3(15.000) = 45.000 \\ \\ jeruk = 15.000 \\ apel = 45.000[/tex]