1、设三个连续偶数分别为x-2,x,x+2,依题意
(x - 2 )+ x + (x + 2) = 180
3x = 180
x = 60
则x - 2 =60 - 2 = 58
x + 2 = 60 + 2 = 62
∴三个连续偶数分别为58,60,62.
2、设这25天平均每天生产x台,依题意
5x + 750 = 4250
25x = 4250 - 750
25x = 3500
x = 140
答:这25天平均每天生产140台.
1、设三个连续偶数分别为x-2,x,x+2,依题意
(x - 2 )+ x + (x + 2) = 180
3x = 180
x = 60
则x - 2 =60 - 2 = 58
x + 2 = 60 + 2 = 62
∴三个连续偶数分别为58,60,62.
2、设这25天平均每天生产x台,依题意
5x + 750 = 4250
25x = 4250 - 750
25x = 3500
x = 140
答:这25天平均每天生产140台.