Respuesta :
Answer:
13.10
Step-by-step explanation:
We know that:
The cost including sales tax: $65.50
Tip: 20% of the price.
So, to calculate how much did they pay for the tip, we just need to find the 20% of $65.50 by multiplying:
[tex]65.50(0.20)=13.10[/tex].
Therefore, the family gave 13.10 for tip on their meal.