The figure, not drawn to scale, is made up of Square B and Rectangles C and D. The area of Square B is
811 of the total area of Rectangles C and D.
14 of Square B is shaded.
15 of Rectangle C is shaded.
16 of Rectangle D is shaded. What fraction of the figure is unshaded?
|
B |
C |
D |
Comparing B and the total of C and D |
8x1 = 8 u |
11x1 = 11 u |
Total |
4x2 = 8 u |
5x1 = 5 u |
6x1 = 6 u |
Shaded |
1x2 = 2 u |
1x1 = 1 u |
1x1 = 1 u |
Unshaded |
3x2 = 6 u |
4x1 = 4 u |
5x1 = 5 u |
The area of B is repeated. Make the area of B the same. LCM of 8 and 4 is 8.
When B is 8 u, the total areas of C and D is 11 u.
Then adjust the values of C and D so that the total areas of C and D is equal to 11 u.
Unshaded areasTotal area =
6 + 4 + 5 8 + 4 + 5 =
1517 Answer(s):
1517