# Math

posted by Odessa

The perimeter of a recatangle is twice the sum of its length and its width. The perimeter is 16 meters and its length is 2 meters more than twice its width.What is the length?

1. Damon

w = width
(2+2w) = length
perimeter = 2[w+(2+2w)] =16
w+2+2w = 8
3 w = 6 etc

2. drwls

16 = 2L + 2W)
L = 2W + 2.

Solve the two equations for L and W.

By substitution, you can see that

16 = 2L + L - 2 = L - 2

3. Odessa

The ratio of men to women in a certain factory is 3:4. There are 210 men. How many workers are there?

4. Odessa

x = (4/3) * 210 = 280

5. drwls

M/W = 3/4
M = 210
W = 280
M + W = ?

The number of women is 280, but the total number of workers is something else.

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