In triangle ABC, $AD=DB$, DE is parallel to BC, and the area of triangle ABC is 40. What is the area of triangle ADE?

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সঠিক উত্তর: 10। ব্যাখ্যা:

In triangle ABC, \(AD=DB\), DE is parallel to BC, and the area of triangle ABC is 40. What is the area of triangle ADE?