SSC CGL Tier II 1 Dec 2016 Paper 1

Question : 23 of 100

Marks: +1, -0

Among 132 examinees of a certain school, the ratio of successful to unsuccessful students is 9 : 2. Had 4 more students passed, then the ratio of successful to unsuccessful students would have been

14 : 3
14 : 5
28 : 3
28 : 5

Validate

Solution:

(4) Successful students

⇒{9}/{11} ×132=108

Unsuccessful students

⇒{2}/{11} × 132=24

When 4 more students succeed,
Required ratio = (108 + 4) : (24 – 4)
= 112 : 20 = 28 : 5

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