设丙是x 则乙是5/4x 甲是5/4x+10
5/4x+10=40%(x+5/4x+5/4x+10)
1.25x+10=1.4x+0.4
1.4x-1.25x=10-0.4
0.15x=9.6
x= 64
这批零件共(1+5/4+5/4)x64+10=234个
设丙是x 则乙是5/4x 甲是5/4x+10
5/4x+10=40%(x+5/4x+5/4x+10)
1.25x+10=1.4x+0.4
1.4x-1.25x=10-0.4
0.15x=9.6
x= 64
这批零件共(1+5/4+5/4)x64+10=234个