Answer:
The total cost of the manual including Tip is $78
Step-by-step explanation:
The total bill amount at the restaurant = $65
The tip given = 20%
Now, 20% of 65 = [tex]\frac{20}{100 } \times 65[/tex]
= [tex]\frac{1}{5} \times 65 = 13[/tex]
⇒ 20% of the bill amount $65 = $13
Hence, Total amount = Bill amount + Amount of Tip
= $65 + $13 = $78
So, the total cost of the manual including Tip is $78.