Rectangle has a perimeter of 48". The length is 4" more than the width. What is the length?

16 14 12

18

12

If you don't know it off the top of your head, work backwards.

48/4=12

Check:

12(4)=48

Length equals 14

Step-by-step explanation:

This problem can be written out as 2 equations

Since we know the perimeter (P) is 48, we can use the formula 2l+2w=P and get 2l+2w=48.

Then we can take the other equation, w+4=l (which I got from the second sentence), and substitute it for l in the equation.

This can be written out as- 2(w+4) + 2w=48

Then we distribute and get 2w + 2w + 8 = 48, simplifying to 4w + 8= 48

We then subtract 8 from 48 and get 4w=40, dividing 40 by 4 to get w=10.

then, we add 4 to w to get 14.