Q: 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?
A: Her brother bought 6 / 3 = 2 paperbacks. He bought 4 * 2 = 8 hardbacks. In total he bought 2 + 8 = 10 books. The answer is 10.

Q: A town is trying to clear litter from its streets. The council pays for adding 14 trash cans to the streets and also pays for adding twice as many trash cans to the back of stores. How many trash cans has the town paid for?
A: At the back of stores, the town has paid for 14 trash cans on the streets * 2 = 28 trash cans. The town has therefore added 14 trash cans on the streets + 28 trash cans at the back of stores = 42 trash cans. The answer is 42.

Q: If a solver flips a coin 211 times and gets a head on 65 of the flips, how many more tails than heads did he get?
A:
If the solver got a head in 65 of the 211 flips, he got 211 - 65 = 146 tails. The number of tails than he got more than head is 146 - 65 = 81. The answer is 81.