Final answer:
The waiter earned $36 in tips by receiving a $6 tip from each of the six customers who decided to tip.
Step-by-step explanation:
The student asked how much money the waiter earned from tips. To solve this, we need to consider that the waiter had eleven customers in total, but only six of them left a tip. Since five customers did not tip, we can subtract five from eleven to get the number of customers who did tip, which is six. Each of these six customers left a six-dollar tip. To calculate the total amount of tips, we multiply the number of tipping customers by the amount per tip:
- Number of customers who tipped = Total customers - Customers who didn't tip = 11 - 5 = 6
- Total tips = Number of tipping customers × Tip per customer = 6 × $6 = $36
Therefore, the waiter earned a total of $36 in tips from customers who did tip.