To calculate the total bill including a 20% tip, you first need to find the amount of the tip based on the bill.
-
Calculate the tip: \[ \text{Tip} = \text{Bill} \times \text{Tip Percentage} \] \[ \text{Tip} = 25.45 \times 0.20 = 5.09 \]
-
Calculate the total: \[ \text{Total} = \text{Bill} + \text{Tip} \] \[ \text{Total} = 25.45 + 5.09 = 30.54 \]
Therefore, the total amount including the tip would be $30.54.