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?
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
#### 10