Final answer:
The bake sale started with 3 1/4 pies, and all were sold in 1/4 portions. By finding out how many 1/4 portions make up 3 1/4 pies, we discover there are a total of 13 portions. Hence, they sold 13 portions of pie.
Step-by-step explanation:
The student's question involves calculating how many portions of pie were sold given that a bake sale started with 3 1/4 pies and sold pies in 1/4 portions. First, we need to determine how many 1/4 portions there are in 3 1/4 pies.
To find this, we multiply the whole number of pies by 4 (since there are 4 quarters in a whole) and then add the extra 1/4 portion:
- 3 pies × 4 portions per pie = 12 portions
- Add the remaining 1/4 portion: 12 + 1 = 13 portions
Therefore, the bake sale started with a total of 13 portions of pie. If all the portions were sold, they sold 13 portions of pie in 1/4 portions.