The width of a rectangle is 3/4 its length. The perimeterof the rectangle is 420ft. What is the lenght, in feet, of the rectangle

The length = 120 feet

Step-by-step explanation:

Givens

Let the length  = x

Let the width = 3/4  x

Perimeter = 420 feet

Formula

Perimeter = 2*L + 2*w

Solution

2*x + 2(3/4) x = 420

2x + 1.5x = 420

3.5 x = 420

x = 120

x = 12

y = 15

step-by-step explanation:

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads