设A超市去年销售额为x B超市为y
则有方程组
x + y=150
(1+0.15)x + (1+0.1)y = 170
解方程组 得
x = 100
y = 50
于是今年销售额
(1+0.15)x = 115
(1+0.1)y = 55
单位都是万元
设A超市去年销售额为x B超市为y
则有方程组
x + y=150
(1+0.15)x + (1+0.1)y = 170
解方程组 得
x = 100
y = 50
于是今年销售额
(1+0.15)x = 115
(1+0.1)y = 55
单位都是万元