Final answer:
By subtracting Ron's fixed weekly salary from his total weekly earnings and then dividing by the commission rate, we determine his total weekly sales. Dividing this number by the number of workdays gives an average daily sales figure of $225.
Step-by-step explanation:
The question asks us to calculate Ron's average daily sales based on his weekly earnings. Ron's total earnings for the week are $383.75, and we know he receives a fixed salary of $215 plus 15% of his weekly sales. To find the amount generated from sales alone, we subtract his salary from his total earnings:
Total earnings - Salary = Sales earnings $383.75 - $215 = $168.75
This $168.75 represents 15% of his weekly sales, so to find the total amount of his weekly sales, we divide by 15% (or 0.15 in decimal form):
Sales earnings / 0.15 = Total weekly sales $168.75 / 0.15 = $1,125
To find his average daily sales, we divide his total weekly sales by the number of days he works, which is five:
Total weekly sales / 5 = Average daily sales $1,125 / 5 = $225
Therefore, Ron's average daily sales amount to $225.