Out of 90 books in a library, 10 are social science books, 18 hindi, 27 english and remaining are science books. Find the ratio of :
a) Number of hindi books to english books.
b) Number of social science books to science books.
c) Number of social science books to the total number of books.
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Answer:
the answers are as follows;
a.2:3
b.2:7
c.1:9
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