1 |
4 |
1 |
4 |
1 |
7 |
1 |
28 |
乙單獨(dú)做每天完成這項(xiàng)工程的:
1 |
5 |
1 |
5 |
1 |
6 |
1 |
30 |
甲乙合作完成這項(xiàng)工程的
1 |
2 |
1 |
2 |
1 |
28 |
1 |
30 |
=
1 |
2 |
15 |
420 |
14 |
420 |
=
1 |
2 |
29 |
420 |
=
1 |
2 |
420 |
29 |
=
210 |
29 |
=7
7 |
29 |
答:甲乙兩隊(duì)合作7
7 |
29 |
故答案為:7
7 |
29 |
1 |
4 |
1 |
5 |
1 |
4 |
1 |
4 |
1 |
7 |
1 |
28 |
1 |
5 |
1 |
5 |
1 |
6 |
1 |
30 |
1 |
2 |
1 |
2 |
1 |
28 |
1 |
30 |
1 |
2 |
15 |
420 |
14 |
420 |
1 |
2 |
29 |
420 |
1 |
2 |
420 |
29 |
210 |
29 |
7 |
29 |
7 |
29 |
7 |
29 |