Her brother bought 6/3=<<6/3=2>>2 paperbacks

He bought 4*2=<<4*2=8>>8 hardbacks

In total he bought 2+8=<<2+8=10>>10 books

# Answer

10
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
At the bookstore, Sarah bought 6 paperback books and 4 hardback books. Her brother bought one-third as many paperback books as Sarah bought, and two times the number of hardback books that she bought. How many books did her brother buy in total?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
10
At the bookstore, Sarah bought 6 paperback books and 4 hardback books. Her brother bought one-third as many paperback books as Sarah bought, and two times the number of hardback books that she bought. How many books did her brother buy in total?
train