36元买乙纪念章个数x
36/(x-2) -36/x=0.6
60/(x-2)-36/x=1
60x-60(x-2)=x(x-2)
60x-60x+120=x^2-2x
x^2-2x-120=0
(x-12)(x+10)=0
x1=12 x2=-10(舍)
所以 乙单价3元 甲单价 3.6
36元买乙纪念章个数x
36/(x-2) -36/x=0.6
60/(x-2)-36/x=1
60x-60(x-2)=x(x-2)
60x-60x+120=x^2-2x
x^2-2x-120=0
(x-12)(x+10)=0
x1=12 x2=-10(舍)
所以 乙单价3元 甲单价 3.6