Let two lines p and q be parallel. Consider two points B and C on the line p and two points D and E on the line q. The line through B and E intersects the line through C and D at A in between the two lines p and q. If AC:AD = 4:9, then what is the ratio of area of triangle ABC to that of triangle ADE?

Mathematics 2019 CDS Elementary Mathematics 2019 CDS 2019

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