Final answer:
The total selling expenses incurred by Proton for the month of August is $150,000.
Step-by-step explanation:
The total selling expenses incurred by Proton for the month of August can be calculated by adding the salaries of the sales representatives and the commissions paid. Since there are 6 sales representatives and each is paid a salary of $20,000 per month, the total salary expense for the month is 6 * $20,000 = $120,000.
Each representative sold 5 refrigerators in August, and for each refrigerator sold, Proton pays a 10% commission on the sale price. The sale price of each refrigerator is $10,000, so the commission per refrigerator is 10% * $10,000 = $1,000.
Therefore, the total commission expense for the month is 6 sales representatives * 5 refrigerators * $1,000 commission per refrigerator = $30,000.
The total selling expenses incurred by Proton for the month of August is $120,000 (salaries) + $30,000 (commissions) = $150,000.