Answer:
$11.40
Explanation:
This question asks us to find how much money the family should leave as their tip.
To find the tip, multiply the cost of the total bill by the tip rate.
cost of bill * tip rate
The total bill was $57, and they are leaving a 20% tip
$57 * 20%
Convert 20% to a decimal by dividing by 100 or moving the decimal place 2 spaces to the left.
20/100=0.20
20.0--> 2.0 --> 0.20
20%=0.20
$57 * 0.20
Multiply 57 and 0.20
11.4= $11.40
The family should leave a tip of $11.40