There are 35 books on the cart. There are five fiction books, 4 more non-fiction books than fiction books, 2 times as many autobiographies as fiction books, and the rest picture books. How many books were picture books?
There are 5+4 = <<5+4=9>>9 non-fiction books on the cart.
There are 2*5 = <<2*5=10>>10 autobiographies on the cart.
There are 5+9+10 = <<5+9+10=24>>24 fiction, non-fiction, and autobiography books on the cart.
There are 35-24 = <<35-24=11>>11 picture books on the cart.
#### 11