Sagot :
%12 yüzdesinin 3 katı %36'dır. Bundan dolayı: 30.3=90 eder. Cevap 90'dır.
Cevap:
12÷100×a=30
12a=30×100
2a=5×100
a=250
250×36÷100=25×36÷10=90
cevap 90 dır
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