What x is added to each of 10, 16, 22 and 32, the numbers so obtained – McqOptions

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1.	What x is added to each of 10, 16, 22 and 32, the numbers so obtained in this order are in proportion. What is the mean proportional between the numbers (x + 1) and (3x + 1)?
A.	15
B.	12
C.	9
D.	10
Answer» B. 12

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