Question

A rectangle room is 1.2 times as long as it is wide, and it’s perimeter is 25. Find the dimensions

Answer 1

Explanation:

L = length W = width

Length is 1.2 times width ⇒ L = 1.2 x W = 1.2W

Perimeter = 2 x W + 2 x L

= 2W + 2L = 25

Substitute L = 1.2W into the equation for the perimeter and solve for W

2W + 2L = 25

2W + 2(1.2W) = 25

4.4W = 25

W = 25 ÷ 4.4 = 125/22

Now substitute found value of W into L = 1.2W to find L:

L = 75/11