Question

The perimeter of a rectangular pool is 48 feet. Its length is 4 feet more than its width.

Let the width of the pool be represented by x.

Which equation below can be used to describe the situation?

Answer 1

48=2(x+4)+2x

Explanation:

Step one:

given data

Perimeter= 48ft

let the with be x

length= x+4

Step two:

the expression for the perimeter is

P=2L+2W

substituting

48=2(x+4)+2x

48=2x+8+2x

solve for x

48=4x+8

48-8=4x

40=4x

x=40/4

x=10ft

Step three:

the width is 10 ft

the lenght= x+10

length= 10+10= 20ft