In a school library the ratio of number of mathematics books tonimber of science book is the same as the ratio of science books to English books.aIf there are 252 books in science and 216 books in English.Find the number of books in mathematics.
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Answer:
No. of science books =450
No. of hindi books =300
Ratio of science books to hindi books =450:300
=
330
450
=3:2
Let no. of Mathematics books =x
Ratio of Maths to Science books =x:450=3:2
=
450
x
=
2
3
[Cross multiply]
=2x=3×450
∴x=
2
3×450
x=675
∴ No. of Maths books =x=675.
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