The cost structure of Dennis's Retail Mart is dominated by variable costs with a contributon matgin ratio of 0.35 and fixed costs of $86,380. Every doliar of sales contributes 35 cents toward fixed costs and profit. The cost structure of a competitor, Oaktield Convonience Store, is dominated by fixed costs with a higher contribution margin ratio of 0,55 and fixed conts of $617.000. Every doilat of sales contributes 65 cents toward fixed costs and profit Both companios have sales of $1,234,000 for the year. Required: a. Compare the two componies' cost structures. b. Suppose that both companies experience a 10 percent increase in sales volume. By how much would each company's prolits increase? Complete this question by entering your answers in the tabs below. Compare the two companies' cost structures. The cost structure or Dennis's Retall Mart is dominated by variable costs with a contribution margin ratio of 0.35 and fixed costs of $86,380. Every dollar of seles contributes 35 cents toward fixed costs and profit. The cost structure of a competitor, Oakfield Convenience Store, is dominated by flxed costs with a higher contribution margin ratio of 0.65 and fixed costs of $617,000. Every dollar of sales contributes 65 cents toward fixed costs and profit. Both companies have sales of $1,234,000 for the year. Required: a. Compare the two companies' cost structures: b. Suppose that both companies experience a 10 percent increase in sales volume. By how much would each company's profits increase? Complete this question by entering your answers in the tabs below. Suppose that both companies experience a 10 percent increase in sales volume. By how much would each company's profits increase