In a public library, the ratio of story books to science books is the same as the ratio of science books to mathematics books. If there are 2475 story books and 1650 science books in the library, find the numbers of mathematics books in it.
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The ratio of story books to science books is same as the ratio of science books to mathematics books. ( Given )
As the Ratio of Story books to Science books is
2475/1650 = 3 / 2 or 3:2
____________________
Let the number of mathematics books is x.
3/2 = 1650/x. or 3:2 = 1650:x.
x = 1650*2/ 3
x = 3300/3
x = 1100
_____________________
Hence, The Number of mathematics books is 1100.
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