Lizzy: A library has a number of books. 35% of them are intended for children and 104 of them are for adults. How many books are in the library?.
Me: Hmmm, let me think. I think this is the detailed solution:
65% of the library books are for adults because 100 - 35 = 65. There are 160 library books in total because 104 / .65 = 160. Final answer: 160.