RRB NTPC 17 January 2017 Paper

Question : 87 of 120

Marks: +1, -0

There are total 200 students in a school, of which

1/ 5

th are boys. Find the number of girls in the school.

Solution:

(1) Given the total number of students = 200
Proportion of boys =

1/s

of 200݂
Proportion of girls = (1-

1/s

) of 200=

4/5

× 200 = 160

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