The relationship between a distance x in a garden and the corresponding distance y in a model of the garden is y = kx. A triangu
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Given is the number of science fiction books = 48
Let the number of mystery books be = x
Let the number of biographies be = y
Ratio of the number of mystery books to the number of science fiction books is 4:3 so
=
Ratio of the number of science fiction books to the number of biographies is 4:5 so
=
Hence there are 48 science fiction books, 64 mystery books and 60 biographies.
So total number of books are =