Question
The ratio of the area of Rectangle W to that of Rectangle X to that of Rectangle Y is 7 : 4 : 3. 221 of Rectangle W and 19 of Rectangle Y are shaded. The shaded area is 57 m2. Find the total unshaded area of the figure.
4 m

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The ratio of the area of Rectangle W to that of Rectangle X to that of Rectangle Y is 7 : 4 : 3. 221 of Rectangle W and 19 of Rectangle Y are shaded. The shaded area is 57 m2. Find the total unshaded area of the figure.