The net profit of Carbon Footwear is $10 million. Its net marketing contribution is derived from sales of $80 million and the marketing and sales expenses amount to $15 million. The general and administrative expenses and other operating expenses amount to $20 million.

What is the total amount of Carbon Footwear's net marketing contribution? A) $10 million B) $20 million

C) $30 million

D) $40 million

E) $50 million

Calculate the percent gross profit generated by Carbon Footwear.

A) 52.50% B) 54% C) 55.75%

D) 56.25%

E) 60%

If the total sales revenue generated was $100 million (instead of $80 but all the other numbers were the same), the marketing ROS would be equal to ________.

A) 20% B) 10%

C) 40%

D) 30%