Question

In a school 2/5th of the students are boys.1/3rd of the boys are vegetarian whereas 4/9th of the girls are vegetarian .what fraction of the students in school is non vegetarian

Answer 1

Answer:

Step-by-step explanation:

Total number of girls= 3/5

So, total number of boys= 1-3/5=2/5

So number of girls absent = 2/9 of total girls

= 2/9*3/5

=2/15

No. of boys absent = 1/4 of total boys

= 1/4*2/5

=1/10

So total students absent = 2/15+1/10

=4/30+3/30

=7/30

So number of students present= 1-7/30

=30/30-7/30

=24/30

=4/5

So, 4/5 of total students are present.

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Answer 2

Answer:

3/5

Step-by-step explanation:

No of girls: 1-2/5=3/5

No of total vegitarian students: 1/3 of 2/5 + 4/9 of 3/5

                                          = 1/3*2/5  + 4/9*3/5

                                          =2/15 +12/45

                                          =18/45

Fraction of non vegetarian Students = 1-(18/45)=27/45= 3/5