$30.60
Step-by-step explanation:
We need to find 90% of a number and it equals 27.54, becuase he gave a certain amount, and 90% of it ($27.54) was for the waitress.
You can see that 90% of 30.60 is equal to 27.54
Hope this helps! :)
765238725478629038640962136509762139056074
step-by-step explanation:
64087235609746097215074621039754021037