Final answer:
To calculate the bill amount, divide the tip amount by the percentage represented by the tip.
Step-by-step explanation:
To find the total bill including the tip, we need to determine the percentage represented by the tip amount and calculate the bill amount accordingly. In this case, Michael left a tip of $9.00, which he mentioned was 15% of the bill. To calculate the bill amount, we divide the tip amount by the percentage represented by the tip, which is 15%. We can set up an equation as follows:
Tax amount = $9.00 / 15% = $60.00
Answer:
The bill amount was $60.00.