Answer:
38.1cm or 15inches
Explanation:
You can simply get this from the formula:
perimeter of a rectangle is 2(l+b)
where your b is the width of the rectangle.
Now,
width = perimeter - (2l)/2
= 127-(2*25.4)/2
=127-(50.8)/2
=(127-50.8)/2
=76.2/2
=38.1cm
P.S: Calculations done with centimeters (an inch is 2.54cm)