Question 880282
You are correct! it is 13 over 35! And it can't be reduced as they have no common factor.

 {{{13/35}}}


Think of it this way...
If you got 15 marks out of 20 in a test you would write it as {{{15/20}}}
(Because you scored 15 out a total of 20)


There are 13 male students out of a total of 35 students

so we write {{{13/35}}}


The top number of the fraction (numerator) is the number you have and the bottom number of the fraction (denominator) is always the total number of people, pieces, things etc.