| 3 |
| 4 |
去乙工地的人数是总人数的1-
| 3 |
| 4 |
| 1 |
| 4 |
下午去乙工地的人数是总人数的：
| 7 |
| 12 |
甲工地的工作量（
| 3 |
| 4 |
| 7 |
| 12 |
| 1 |
| 2 |
| 2 |
| 3 |
乙工地的工作量
| 2 |
| 3 |
| 3 |
| 2 |
| 4 |
| 9 |
乙工地完成的工作量：（
| 1 |
| 4 |
| 5 |
| 12 |
| 1 |
| 2 |
| 1 |
| 3 |
剩下的工作量
| 4 |
| 9 |
| 1 |
| 3 |
| 1 |
| 9 |
总人数为4÷
| 1 |
| 9 |
答：这批工人有36人．
故答案为：36．
| 1 |
| 2 |
| 7 |
| 12 |
| 3 |
| 4 |
| 3 |
| 4 |
| 1 |
| 4 |
| 7 |
| 12 |
| 3 |
| 4 |
| 7 |
| 12 |
| 1 |
| 2 |
| 2 |
| 3 |
| 2 |
| 3 |
| 3 |
| 2 |
| 4 |
| 9 |
| 1 |
| 4 |
| 5 |
| 12 |
| 1 |
| 2 |
| 1 |
| 3 |
| 4 |
| 9 |
| 1 |
| 3 |
| 1 |
| 9 |
| 1 |
| 9 |