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Verified answer
Misal 1 kg apel = a1 kg jeruk = b
a = 3b
5a + 3b = 54.000
5a + a = 54.000
6a = 54.000
a = 54.000 / 6
a = 9.000
harga 1 kg apel adalah Rp. 9.000
Apel = y
harga y = 3x
=》 3x + 5y = 54.000
=》 3x + 5.3x = 54.000
=》 3x + 15x = 54.000
=》 18x = 54.000
=》 x = 3.000 (harga 1 jeruk)
Jadi Harga 1 apel
=> y = 3x
=> y = 3X3.000
=> 9.000