The figure, not drawn to scale, is made up of 3 different triangles J, K and L. 20% of triangle J and 35% of triangle L is shaded. The shaded area of J is the same as the shaded area of L. What fraction of the figure is shaded if 25% of Triangle K is shaded?

Unshaded area of J	Shaded area of J	Unshaded area of L	Shaded area of L
4x7	1x7	13x1	7x1
28 u	7 u	13 u	7 u

20% = ²⁰₁₀₀ = ¹₅
35% = ³⁵₁₀₀ = ⁷₂₀
25% = ²⁵₁₀₀ = ¹₄
The shaded area of J is the same as the shaded area of L.

Make the LCM of the shaded area of J and shaded area of L the same.
LCM of 1 and 7 = 7

¹₄ of K is shaded
= Shaded area of J + Shaded area of L
= 7 u + 7 u
= 14 u

Fraction of K that is unshaded 
= 1 - ¹₄
= ³₄ 

¹₄ of K = 14 u
³₄ of K = 3 x 14 u = 42 u

Fraction of the figure that is shaded if 25% of Triangle K is shaded
= ^{14 + 14}_{28 + 42 + 13 + 14 + 14}
= ²⁸₁₁₁

Answer(s): ²⁸₁₁₁