Which story context best represents the expression $8 \times (12 + 5)$?

A store has 8 boxes of 12 donuts and receives 5 more donuts.

A painter buys 8 cans of blue paint and 5 cans of white paint for 12 dollars each.

A class has 8 groups of students. Each group has 12 boys and 5 girls. What is the total number of students?

Someone buys 8 items, then 12 items, then 5 items.

Which story context correctly matches the numerical expression $(15 - 3) \div \frac{1}{2}$?

A 15-foot rope is cut into 1/2-foot sections, and then 3 sections are removed.

A tank has 15 gallons of water. 3 gallons are removed. The rest is used to fill bottles that hold 1/2 gallon each.

A recipe needs 15 cups of flour. Someone removes 3 half-cups of flour.

Someone has 15 dollars and spends 3 dollars on a drink that is 1/2 liter.

The story should involve addition instead of subtraction.

The story describes two separate subtractions, not the multiplication of 4 and 8.

The story should have started with a number other than 50.

The subtraction should happen before the multiplication.