Answer:
Aubrey tip $25.50 tip to the staff.
Explanation:
Aubrey's dinner cost $ 85.
She tips the waitstaff 30%, percent for excellent service.
Now, to find the tip Aubrey pay to the staff.
Cost of dinner = $85.
Percent of tip = 30%.
So, to get the amount of tip:
30% of $85.
Therefore, Aubrey tip $25.50 tip to the staff.