Mixed cost at different levels of activity
Leon Corporation paid one of its sales representatives $5,600 during the month of March. The rep is paid a base salary plus $13 per unit of product sold. During March, the rep sold 200 units.
Required
Calculate the total monthly cost of the sales representative's salary for each of the following months.
| Month | April | May | June | July | 
| Number of units sold | 230 | 180 | 280 | 150 | 
| Total variable cost | 
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 | 
 | 
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| Total fixed cost | 
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 | 
 | 
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| Total salary cost | 
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