A=0.15+0.85(C/2)
B=0.15+0.85A
C=0.15+0.85(A+B)
A = 0.425C+0.15---(1)
B = 0.85A++0.15---(2)
C = 0.85A+0.85B+0.15---(3)
(1).(2).(3) 聯立解
B=0.15+0.85(0.15+0.025C)
=0.15+0.1275+0.36125C
C=0.15+0.85(0.15+0.425)+0.85(0.15+0.1275+0.35125C)
=0.15+0.1275+0.36125C+0.1275+0.108375+0.3070625C
=0.513375+0.6683125C
=> 0.3316875C=0.513375
=> C=1.5477671
B=0.15+0.1275+0.36125*1.5477671=0.83663086
A=0.15+0.45*1.5477671=0.807801012
C>B>A
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