A) A + C = B + D
B) A + C = 2D
C) A + D = B + C
D) A + C = 2B
Correct Answer: A
Solution :
Given: \[A+B=2C\] ..........(a) and \[C+D=2A\] ..........(b) Adding (a) and (b) we get: \[A+B+C+D=2C+2A\Rightarrow B+D=A+C.\]
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