Jen has read 4/5 of a book. the next day, she read 2/3 of what she had left. what fraction of the book is left to read?

Jen would have 2/15 of the book left to read.

Because Jen read 4/5 already then 1/5 is remaining. She then read 2/3 of 1/5 so you would multiply 1/5 by 2/3. 1/5*2/3= 2/15.

The second and fourth answer are correct