Question
The ratio of the area of Rectangle R to that of Rectangle S to that of Rectangle T is 3 : 2 : 1. 29 of Rectangle R and 13 of Rectangle T are shaded. The shaded area is 60 m2. Find the total unshaded area of the figure.
4 m

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The ratio of the area of Rectangle R to that of Rectangle S to that of Rectangle T is 3 : 2 : 1. 29 of Rectangle R and 13 of Rectangle T are shaded. The shaded area is 60 m2. Find the total unshaded area of the figure.