Arithmetic Reasoning - Verbal and Reasoning

Q1:

In a class, 3/5 of the students are girls and rest are boys. If 2/9 of the girls and 1/4 of the boys are absent, what part of the total number of students is present ?

A 17/25

B 18/49

C 23/30

D 23/36

ANS:C - 23/30