Define a variable write an equation and solve the problem. the width of a rectangle is 3 meters more than one-fourth its length. the perimeter is 10 meters more than twice its length. find the length and width

Respuesta :

Let's assume

length of rectangle is L

width of rectangle is W

the width of a rectangle is 3 meters more than one-fourth its length

so,

[tex]W=3+\frac{1}{4} L[/tex]

the perimeter is 10 meters more than twice its length

we know that

perimeter =2(L+W)

so, we get

[tex]2(L+W)=10+2L[/tex]

now, we can simplify it

[tex]2L+2W=10+2L[/tex]

subtract both sides by 2L

[tex]2L+2W-2L=10+2L-2L[/tex]

[tex]2W=10[/tex]

[tex]W=5[/tex]

now, we can find L

[tex]5=3+\frac{1}{4} L[/tex]

subtract both sides 3

[tex]5-3=3-3+\frac{1}{4} L[/tex]

[tex]2=\frac{1}{4} L[/tex]

multiply both sides by 4

[tex]4*2=4*\frac{1}{4} L[/tex]

[tex]L=8[/tex]

so,

length of rectangle is 8 meter

width of rectangle is 5 meter ............Answer