Question

A given rectangle is twice as wide as it is tall. It has a perimeter of 138 inches. How many inches tall is it? How many inches wide is it? Show your mathematics and explain your process for finding your answer.
-Please help quickly
-Thank you

Answer 1

Length = x
width = 2x
perimeter = 138in

in order to find perimeter you add length and width twice, so;

2(2x + x) = 138
2(3x) = 138
6x = 138
x = 23

since x = 23;

the length is 23in and the width is 46in

Answer 2

Length is 23in and width is 46in