LIC AAO 22 Mar 2015 Paper

Question : 42 of 160

Marks: +1, -0

Out of the total number of students who have enrolled for C++, 60% were able to pass the exam. If the respective ratio between the number of students from colleges P, Q, R and S who were able to pass the exam for C++ was 3 : 4 : 2 : 3, what is the number of students who were able to pass the exam for C++ from college Q?

Validate

Solution:

Number of students who are able to pass for course
C++ =

{2000×60}/{100}

= 1200
P : Q : R : S = 3 : 4 : 2 : 3
Sum of the terms of ratio = 3 + 4 + 2 + 3 = 12
∴ Successful students fromcollege Q =

4/{12}

× 1200 = 400

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