Answer:
20%
Explanation:
Given: Tip to waitress= $19
Total dinner bill= $95
Now, finding the percent of dinner bill did family leave for the tip.
Percent of tip=
![(bill\ amount)/(Total\ bill) * 100](https://img.qammunity.org/2021/formulas/mathematics/middle-school/bwrj915rywfq7q4pu2swygvxcq4dzuihkw.png)
⇒ Tip percentage=
![(19)/(95) * 100= 0.2* 100](https://img.qammunity.org/2021/formulas/mathematics/middle-school/tndb2y73tp65qz3qyrwhfnuvwkgmcc54e8.png)
∴ Tip percentage= 20%
Hence, 20% of the dinner bill did family leave for the tip.