Shawn sells 36 vehicles in 4 weeks. Brett sells 56 vehicles in 7 weeks. Who sells more vehicles per week?

Shawn sells more at a rate of 9 vehicles per week

Explanation:

Shawn sells 36 vehicles in 4 weeks.

Thus, her selling rate per week = Number of vehicles sold / Number of weeks

Selling rate = 36/4 = 9

While Brett sells 56 vehicles in 7 weeks.

Selling rate = 56 / 7 = 8 vehicles per week

So since, Shawn 9 vehicles per week while

Brett sells 8 vehicles per week, we can say Shawn sells more vehicles in a week

the answer is sex-linked recessive.