.
Sadie recently built a small shed in her backyard and used
mud brick for the shed's walls. One of the ingredients in
mud brick is sand, so Sadie bought 3 bags of sand before
starting on the project. On the first day of the project, Sadie used
1 5/12
bags of the sand to make mud bricks. On the second day, she used
5/12
of a bag. How much sand did Sadie have left by the start of the third day?