The Circles group had this problem to solve this week. It was very interesting to see the thinking and the perseverance of every student as they tried to work out the answer. See if you can solve it and post your strategy in the comments.
The Delish Bakery baked 63 Afghan biscuits on Wednesday. That morning a teacher bought some of the Afghans for her class. Now there are 45 Afghans left. What fraction of the Afghans did the teacher buy for her class?