Perimeter of a rectangle:
[tex]p=2(l+w)[/tex]Given,
p=48cm
l=15cm
Substitute the known values in the formula,
[tex]48=2(15+w)[/tex][tex]48=30+2w[/tex][tex]48-30=2w[/tex][tex]2w=18[/tex][tex]w=\frac{18}{2}[/tex][tex]w=9\operatorname{cm}[/tex]Option G is the correct answer.