The above figure comprises of 5 identical rectangles.

If the width of the figure is 30, what is its length?

25
24
27
30

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Looking at the picture you can see that the length of each small rectangle is $\frac{30}{2} = 15$ , and the height is $\frac{30}{3} = 10$ . And the height of the figure, then is $15+10 = \boxed{25}$