The figure, not drawn to scale, is made up of 3 different triangles H, J and K. 15% of triangle H and 35% of triangle K is shaded. The shaded area of H is the same as the shaded area of K. What fraction of the figure is shaded if 25% of Triangle J is shaded?
Unshaded area of H |
Shaded area of H |
Unshaded area of K |
Shaded area of K |
17x7 |
3x7 |
13x3 |
7x3 |
119 u |
21 u |
39 u |
21 u |
15% =
15100 =
320 35% =
35100 =
720 25% =
25100 =
14The shaded area of H is the same as the shaded area of K.
Make the LCM of the shaded area of H and shaded area of K the same.
LCM of 3 and 7 = 21
14 of J is shaded
= Shaded area of H + Shaded area of K
= 21 u + 21 u
= 42 u
Fraction of J that is unshaded
= 1 -
14 =
34 14 of J = 42 u
34 of J = 3 x 42 u = 126 u
Fraction of the figure that is shaded if 25% of Triangle J is shaded
=
42 + 42119 + 126 + 39 + 42 + 42 =
84368=
2192 Answer(s):
2192