Question

the length of a rectangular bulletin board is 3 feet and the perimeter is 16 feet. what is the width of the bulletin board?

Answer 1

we know
P= 2(L+W)
and we know P=16 feet and L=3 feet
so let s solve for W
16=2 (3+w)
16=6+2w
16-6=2w
10=2w
10/2=w
w=5 <-----------------