(1)设甲的进价为X元慧指,乙为X+2元80/X=100/X+2X=8乙的进价为10元(2)设购枣尺买乙X个3X-5+X<=9512(3X-5)+15X>=371(两个方程连列,自凳碧高己解答案喽)
(1)设甲的进价为迟冲X元,乙为X+2元80/X=100/X+2X=8(码基歼2)设购锋渗买乙X个3X-5+X<=9512(3X-5)+15X>37123