Answer:
The amount you would earn is $64.80
Step-by-step explanation:
We know to start that you get 45% of the cost per customer. That's because the customer gives you 20% and you boss gives you 25% (1/4). To find how much that is, multiply it by the cost.
$18 * 45% = $8.10
Now knowing this, we can multiply that amount by the 8 customers per day.
$8.10*8 = $64.80