You spended 77 and then you deduct what you expended on food. 77-5= 72 then you divide 72 by the cost of each shirt and you will have the answer to your question 72/12= 6 so there you go i hope i helped you
Since it's an equilateral triangle, all of the angles are the same. Since its perimeter we just need to add. So 3.5+3.5+3.5= 10.5 So the answer is 10.5
