Answer:
$2.54
Explanation:
Tips are percentages of the meal prices. Divide the tip by the meal price to find the percentage that the tip is of the meal.
9.20/78.00 = 0.118 = 11.8%
Multiply the second meal by the percentage calculated.
21.5 × 0.118 = 2.54
The tip for the second meal is $2.54