题目内容
修一段路,甲队单独做需40天完成,乙队单独做需要24天完成.两队合修10天后,剩下的由乙队单独修,还需几天才能修完?
[1-(
+
)×10]÷
,
=[1-
×10]÷
,
=[1-
]÷
,
=
÷
,
=8(天),
答:还需8天才能修完.
| 1 |
| 40 |
| 1 |
| 24 |
| 1 |
| 24 |
=[1-
| 8 |
| 120 |
| 1 |
| 24 |
=[1-
| 2 |
| 3 |
| 1 |
| 24 |
=
| 1 |
| 3 |
| 1 |
| 24 |
=8(天),
答:还需8天才能修完.
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