In a library there are 1500 books. Among these
books the ratio of books about science to that
about commerce is 1:2. Determine the number
of books about science is to be purchased so that,
this ratio becomes 3 : 5.
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In a library there are 1500 books. Among these
books the ratio of books about science to that
about commerce is 1:2. Determine the number
of books about science is to be purchased so that,
this ratio becomes 3 : 5.
Answered by
0
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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