1.There are two bookshelves A and B .There are 450 books on them.If we take 25 books from A to B the number of the book are the same .Do you know how many books there are on bookshelf A and bookshelf B originally?(A) 250 200 (B) 225 215 (C)200 250 (D

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1.There are two bookshelves A and B .There are 450 books on them.If we take 25 books from A to B the number of the book are the same .Do you know how many books there are on bookshelf A and bookshelf B originally?(A) 250 200 (B) 225 215 (C)200 250 (D

1.There are two bookshelves A and B .There are 450 books on them.If we take 25 books from A to B the number of the book are the same .Do you know how many books there are on bookshelf A and bookshelf B originally?(A) 250 200 (B) 225 215 (C)200 250 (D
1.There are two bookshelves A and B .There are 450 books on them.If we take 25 books from A to B the number of the book are the same .Do you know how many books there are on bookshelf A and bookshelf B originally?
(A) 250 200 (B) 225 215 (C)200 250 (D)215 225

1.There are two bookshelves A and B .There are 450 books on them.If we take 25 books from A to B the number of the book are the same .Do you know how many books there are on bookshelf A and bookshelf B originally?(A) 250 200 (B) 225 215 (C)200 250 (D
有两个书架A和B,上面有450本书.如果从A拿走25本到B,两个书架上的书数目一样.请问原来A和B上面各有多少本书?
正确答案应该是:A

A+B=450
A-25=B+25
答案是A

选a

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