1/4 of students didn’t read. Of the students 3/4 boys read 2/5 girls what fraction were girls

Question

A class was given a book to read. 1/4 of the students didn’t read it. Of the students that read 2/5 were boys. Of the students who didn’t read 2/5 were girls. What fraction of the class were girls

Answer 1

1/4 did not read, 3/4 read the book

2/5 * 3/4 = 6/20 = 3/10 boys read the book

3/5 * 3/4 = 9/20 girls read the book

2/5 * 1/4 = 2/20 = 1/10 girls did not read the book

3/5 * 1/4 = 3/20 boys did not read the book

3/10 + 9/20 + 1/10 + 3/20 = 6/20 + 9/20 + 2/20 + 3/20 = 20/20 = 1 <-- yes it checks

read did not read

girls 9/20 1/10

boys 3/10 3/20