Solve the following problem: Asia walks 2 1/4 miles to the park and then another 1 6/8 miles to her friend’s house. How many miles does see walk in all?

To solve this problem, we need to add the distances that Asia walks to the park and her friend's house together.

Asia walks 2 1/4 miles to the park, which can also be written as 2.25 miles.

Asia walks another 1 6/8 miles to her friend's house, which can also be written as 1.75 miles.

Adding the two distances together:

2.25 miles + 1.75 miles = 4 miles.

Therefore, Asia walks a total of 4 miles in all.