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uang ina = i
jadi
y+i = 76.000
y-i =12.000 dikurangkan
y nya dicoret ....
sehingga menjadi
2i = 64.000
i =32.000
y =32.000+12.000= 44.000
perbandingan
i : y = 32 : 44
= 8 : 11