not going to lie, i was a little confused in the wording for this problem but im guessing the problem is asking for how much books is she reading in one month? ( im sorry if i read that wrong!! )
answer:
1 1/2 books
Explanation:
all you really need to do is dividing for this whole problem ( and you going to need to add/multiply if you wanted to double check )
first lets divide 12 and 8 by 4
12/4
= 3 books
8/4
= 2 months
now we just need to divide each problem by 2
3/2
= 1.5 or 1 1/2 books
2/2
= 1 month
because we dont need to round 1.5 to the nearest whole number, our answer is 1.5 books in 1 month
hope this helps you! if you need anymore help just ask me :)