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Question

In an examination 67% of the students in Mathematics and 76% of the students in science passed. If 19% of the students failed in both the subjects and 310 students passed then the total number of students will be

A
300
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B
400
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C
500
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D
600
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Solution

The correct option is C 500
% of the students failed in Maths
=10067=33%
% of the students failed in Sciences
=10076=24%
and % of the students failed both subjects
=19%
% of the students passed in both the subjects
=[100(33+2419)]%
=62%
Total number of students
=100×31062=500

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