dik: misal adi= a dan dea = d
a = 5 + d
a + d = 30 thn
dit: a: d = ....
penyelesaian:
perbandingan =
17,5 : 12,5 = 7 : 5
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dik: misal adi= a dan dea = d
a = 5 + d
a + d = 30 thn
dit: a: d = ....
penyelesaian:
perbandingan =
17,5 : 12,5 = 7 : 5