Question

a restaurant waiter earns a weekly base pay of $100, and an average tip of $5 for each table served. In a five-day work week, how many tables must be served on average per day for the waiter to earn at least $450?

Answer 1

A weekly pay (five-day work week) is $100.
The average tip is $5.
The waiter wants to make at least $450 in a five-day work week. 
So we have to find out how many times the waiter must serve.
So, first we do $450 - $100 since the waiter already makes $100.
$450 - $100 = $350
Then the waiter gets an average of $5 tips.
So, we do $350 / $5.
$350 / $5 = 70
Our answer is 70.
So, the waiter must serve 70 tables to make at least $450.

Hope this helps you! (:
-PsychoChicken4040

Answer 2

100 + 5x = 450

5x = 350

x = 350/5

x = 70

 she must serve at least 70 tables.