If 2x + 1, x + 2, 2 and 5 are in proportion, then what is the mean pro – McqOptions

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1.	If 2x + 1, x + 2, 2 and 5 are in proportion, then what is the mean proportional between 3.5 (1 – x) and 8 (1 + x)?
A.	4.5
B.	5.5
C.	5.25
D.	4.25
Answer» D. 4.25

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