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SSC CGL Tier 2 Exam 12 Apr 2015 Paper
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© examsnet.com
Question : 73
Total: 100
In a library the ratio of story books and other books is 7 : 2 and there are 1512 story books. Due the collection of some more story books the said ratio becomes 15 : 4. The number of story books collected is
108
100
205
97
Validate
Solution:
(1) Story books ⇒ 1512
Other books ⇒
2
7
×
1512
=
432
Additional story books = x
∴
1512
+
x
432
=
15
4
⇒
6048
+
4
x
=
432
×
15
=
6480
⇒
4
x
=
6480
−
6048
=
432
⇒
x
=
432
4
=
108
© examsnet.com
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