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There are 60 birds in three trees.After a while 4 birds fly to the second tree from the frist treeand 7 birds fly to the third tree from the second tree.Then there are 20 birds in every tree.Do you know how many birds are there in every tree at first?Key:____(the 1st tree),____(the 2nd tree),____(the 3rd tree)

分类: 作业答案 • 2022-01-02 15:40:14
问题描述：

There are 60 birds in three trees.After a while 4 birds fly to the second tree from the frist tree
and 7 birds fly to the third tree from the second tree.Then there are 20 birds in every tree.Do you know how many birds are there in every tree at first?
Key:____(the 1st tree),____(the 2nd tree),____(the 3rd tree)

答

24 23 13

答

Key:24(the 1st tree),
9(the 2nd tree),
27(the 3rd tree)

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