Answer:
16 cm
Step-by-step explanation:
Let the width be x
The length will be 3 x since the length is three times the width
Perimeter=2(l+w) where l is length and w is width
By substituting 128 cm for perimeter, x for w and 3 x for l then
128=2(3x+x)
128=8x
Therefore, the width is 16 cm, the width is 16*3=48 cm
Ok so the consent rate is 5 and 8
Hope this helps
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(x/8)+(1/2)=7/8
X/8=7/8-1/2
X/8=7/8-4/8
X/8=3/8
X=3