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There are two layers of books on the bookshelf of the school library, totaling 540 books, and the books on the upper layer are 1.4 times that of the lower layer. How many books are there on the upper
There are two layers of books on the bookshelf of the school library, totaling 540 books, and the books on the upper layer are 1.4 times that of the lower layer. How many books are there on the upper and lower floors? Hello!

The lower levels are:

540 \u( 1+ 1.4)= 225 copies.

There are 225x 1.4=3 15 books on the upper level.

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