perbandingan senilai
orang hari
10 20
10 + 3 = 13 x
10/13 = 20/x
10/13 × x/20
10x/360
10x = 360
x = 360/10
x = 36 hari
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perbandingan senilai
orang hari
10 20
10 + 3 = 13 x
10/13 = 20/x
10/13 × x/20
10x/360
10x = 360
x = 360/10
x = 36 hari