Answer:
7.5 chores done by Tyler
3 chores done by Nareen
Explanation:
I don't think 7.5 chores can be possible (You might need to re-check the question once more)
Simple division;
$15/$2 = 7.5 chores done
$9/$3 = 3 chores done
just divide how much they have by how much they get each time they complete a chore