If you have 5 apples and you buy 7 more, how many apples do you have in total?

To find the total number of apples, you start with the number you have initially, which is 5 apples, and then add the number of apples you buy, which is 7.

The calculation is straightforward:

5 (initial apples) + 7 (purchased apples) = 12 apples in total.

Thus, the total number of apples you have after the purchase is 12, confirming that the correct answer is indeed 12. This addition represents a basic arithmetic operation that is fundamental to solving many types of word problems in math.