X*0.55+1*0.8=(X+1)*0.6
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X*0.55+1*0.8=(X+1)*0.6X*0.55+1*0.8=(X+1)*0.6X*0.55+1*0.8=(X+1)*0.60.55x+0.8=(x+1)0.60.55x+0.8=0.6x+0
X*0.55+1*0.8=(X+1)*0.6
X*0.55+1*0.8=(X+1)*0.6
X*0.55+1*0.8=(X+1)*0.6
0.55x+0.8=(x+1)0.6
0.55x+0.8=0.6x+0.6
0.6x-0.55x=0.8-0.6
0.05x=0.2
x=4
X*0.55+1*0.8=(X+1)*0.6
0.55x+0.8=0.6x+0.6
0.55x-0.6x=0.6-0.8
-0.05x=-0.2
x=4
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