Given :
Brianna is a waitress in an upscale restaurant. On Friday she waited on 12 groups of customers who spent an average of $186 per group.
Her tips averaged 18% of the total amount spent by all the groups of customers that day.
To Find :
Brianna's tip income earnings on Friday.
Solution :
Total amount of money spent by 12 groups :
P = $ 12×186 = $2232 .
She got tip of 18% of the total amount spent by all the groups of customers.
![T = P* (20)/(100)\\\\T= 2232* (20)/(100)\\\\T=\$446.4](https://img.qammunity.org/2021/formulas/mathematics/high-school/kder427bnc0qndmxdig85b3hi0p3lbgqrg.png)
Brianna's tip income earnings on Friday is $446.4 .
Hence, this is the required solution.