SOMEONE PLS HELPP ILL GIVE BRAINLIEST

Answer:
width = 15 inches
length = 30 inches
Step-by-step explanation:
Let width = w
Length =2w
Perimeter = 90 inches
2*(length + width) = 90
2*(2w +w ) = 90
2* 3w = 90
6w = 90
w = 90/6
w = 15 units
length = 2*15 = 30 units