Question
The ratio of the area of Rectangle X to that of Rectangle Y to that of Rectangle Z is 7 : 4 : 2. 221 of Rectangle X and 16 of Rectangle Z are shaded. The shaded area is 30 cm2. Find the total unshaded area of the figure.
4 m

Click button first when a symbol is required. X

The ratio of the area of Rectangle X to that of Rectangle Y to that of Rectangle Z is 7 : 4 : 2. 221 of Rectangle X and 16 of Rectangle Z are shaded. The shaded area is 30 cm2. Find the total unshaded area of the figure.