A department store buys 500 shirts at a cost of $12,000 and sells them at a selling price of $30 each. Find the percent markup.

Step-by-step explanation:

Step one:

given

number of shirts= 500

cost of all the shirts= $12000

unit cost of shirt= 12000/500

                          =$24

the selling price = $30

the profit per shirt= selling price-cost price

30-24=$6

Required

% mark up

% mark up=( profit/cost price)*100

% mark up=( 6/24)*100

% mark up=0.25*100

% mark up=25%

Hence the % mark up is 25%

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc