(805+812)*6.3=10187.1米 =10.187千米
(1)设甲数为x,乙数为y
列方程组:
(x+10.1)y=xy+23.23 ①;
(y+7.2)x=xy+33.12 ②.
解①得:
xy+10.1y=xy+23.23;
10.1y=23.23;
y=2.3.
解②得:
xy+7.2x=xy+33.12;
7.2x=33.12;
x=4.6.
∴甲数除以乙数=4.6÷2.3=2.
(2)因为258/8=32..(余数).2
所以林林报2,就被分到2组.
(805+812)*6.3=10187.1米 =10.187千米
(1)设甲数为x,乙数为y
列方程组:
(x+10.1)y=xy+23.23 ①;
(y+7.2)x=xy+33.12 ②.
解①得:
xy+10.1y=xy+23.23;
10.1y=23.23;
y=2.3.
解②得:
xy+7.2x=xy+33.12;
7.2x=33.12;
x=4.6.
∴甲数除以乙数=4.6÷2.3=2.
(2)因为258/8=32..(余数).2
所以林林报2,就被分到2组.