10, 20, 30, 40, 50, 60, 70, 80, 90, 100
you're absolutely correct.
each system is sold for $2150, that includes cost + markup, namely the markup is the surplus amount otherwise called "profit".
they sold 12 of those, 2150 * 12 = 25800
they had $4824.36 in profits from it, so if we subtract that from the sale price, we'll be left with the cost of all 12 systems
25800 - 4824.36 = 20975.64
that's the cost for all 12 systems sold, how many times does 12 go into 20975.64? 20975.64 ÷ 12 = 1747.97.
The solution of the given equation is (3,6). The correct option is B.(3,6)
<h3>Given equations,</h3>

<h3>How to solve the equations?</h3>
putting the value of y from equation (1) in equation (2) , we get


substitute the value of x=3 in equation (1) we get,

Hence, the solution of given equation is (3,6).
So, the correct option is B.
For more details about the system of equations, follow the link:
brainly.com/question/12895249
Just multiply the two, your answer should be 21.06
The highest common factor is 13