题目内容
一条绳子,第一次剪去5米,第二次剪去余下的
,这时还剩下10米,这条绳子原来有多少米?
| 1 |
| 5 |
10÷(1-
)+5
=10÷
+5
=10×
+5
=12.5+5
=17.5(米).
答:这条绳子原来有17.5米.
| 1 |
| 5 |
=10÷
| 4 |
| 5 |
=10×
| 5 |
| 4 |
=12.5+5
=17.5(米).
答:这条绳子原来有17.5米.
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