Question 949541
The perimeter equals 2 times the length plus 2 times the width:

2L + 2W = Perimeter, which in your problem is 64

And since the length is 3 times the width, we can say that:

L = 3W Now, using this information we re-write the first equation:

3(2W) + 2W = 64 simplify:
6W + 2W = 64 Add on the left:
8W = 64 Now divide both sides by 8:
W= 8
Proof: 3(2*8) + 2*8 = 64; 48 + 16 = 64 We have the correct answer.