Delhi Police Constable Exam Model Paper 9

Question : 83 of 100

Marks: +1, -0

There are three sections A, B, C in a school of class XII. The ratio of the students in section A and B is 3 : 5 and that in B and C is 4 : 7. If the total number of students in the class XII be 134. How many students are there in section A?

Validate

Solution:

Tips & Tricks,
A : B = 3 : 5 and B : C = 4 : 7
A : B : C = 3 × 4 : 4 × 5 : 5 × 7
A : B : C = 12 : 20 : 35
Number of students in class A

=12/{12+20+35}×134=12/67×134=24

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