?Required information $[$The following information applies to the questions displayed below.$]$ ?The following data pertain to British Isles Aggregates Company, a producer of sand, gravel, and cement, for the year just ended.

sales revenue $6,400,000$

cost of goods sold $2,100,000$

operating expenses $3,660,000$

average invested capital $1,600,000$

required:

compute the company $\text{'}$s sales margin,capital turnover,and ROI.

sales margin $10\%$

capital turnover $4\%$

ROI $20$

$2.$if the sales and average invested capital remain the same during the next year to what the level would total expenses have to be reduced in order to improve the firm's ROI to $45$ ?persent.

total expenses must be reduced to

assuming that the expenses and cost of goods sold are reduced in order to improve the ROI $45\%$ ?compute the firm's new sales margin

new sales margin