a:b=3:5,b:c=2/3:5/3

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a:b=3:5,b:c=2/3:5/3
x)KJ52IJ5mbb{fUؚYBpŶF@)C+#SEV`X=HX 1ds.

a:b=3:5,b:c=2/3:5/3
a:b=3:5,b:c=2/3:5/3

a:b=3:5,b:c=2/3:5/3

a:b=3:5=6:10
b:c=2/3:5/3=2:5=10:25
a:b:c
=6:10:25