题目内容
修一条路,甲队独修15天完成,乙队独修20天完成,甲队先修
天后,剩下的两队合修,修完时甲队共用了几天?
| 1 |
| 2 |
(1-
×
)÷(
+
)+
,
=
÷
+
,
=
+
,
=
+
,
=
,
=8
(天);
答:修完时甲队共用了8
天.
| 1 |
| 15 |
| 1 |
| 2 |
| 1 |
| 15 |
| 1 |
| 20 |
| 1 |
| 2 |
=
| 29 |
| 30 |
| 7 |
| 60 |
| 1 |
| 2 |
=
| 58 |
| 7 |
| 1 |
| 2 |
=
| 116 |
| 14 |
| 7 |
| 14 |
=
| 123 |
| 14 |
=8
| 11 |
| 14 |
答:修完时甲队共用了8
| 11 |
| 14 |
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