If 3x, (x + 9) and (3x + 1) are in A.P then x = ? – McqOptions

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1.	If 3x, (x + 9) and (3x + 1) are in A.P then x = ?
A.	14/3
B.	15/6
C.	15/7
D.	17/4
Answer» E.

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