5. A collector has 56 movie posters and 22 band posters. She wants to sell 28 movie posters but still have her poster collection maintain the same ratio of 56:22. If she sells 28 movie posters, how many band posters should she sell?

11 band posters

Step-by-step explanation:

Let the number of band posters be x

Number of band posters remaining= 22-x

Number of movie posters remaining= 56-28

(56-28)/ (22-x)= 56/22

28/(22-x) = 28/11

22 - x = 11

x = 22 - 11

= 11

i need more information to answer

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.