Question
The ratio of the area of Rectangle Q to that of Rectangle R to that of Rectangle S is 8 : 5 : 3. 316 of Rectangle Q and 16 of Rectangle S are shaded. The shaded area is 56 cm2. Find the total unshaded area of the figure.
4 m

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The ratio of the area of Rectangle Q to that of Rectangle R to that of Rectangle S is 8 : 5 : 3. 316 of Rectangle Q and 16 of Rectangle S are shaded. The shaded area is 56 cm2. Find the total unshaded area of the figure.