In a triangle ABC, DE is parallel to BC; AD = a, DB = a + 4, AE = 2a + 3, EC = 7a. What is the value of 'aâ€™ if a>0 ?_x005F_x000D_

In a triangle ABC, DE is parallel to BC; AD = a, DB = a + 4, AE = 2a +

1.	In a triangle ABC, DE is parallel to BC; AD = a, DB = a + 4, AE = 2a + 3, EC = 7a. What is the value of 'aâ€™ if a>0 ?_x005F_x000D_
A.	5
B.	6
C.	3
D.	4
Answer» D. 4

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In a triangle ABC, DE is parallel to BC; AD = a, DB = a + 4, AE = 2a + 3, EC = 7a. What is the value of 'aâ€™ if a>0 ?_x005F_x000D_

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