SOLUTION: The ratio of the sum of the first three terms of a G.P to the sum of the first 6 terms is 27:19. The common ratio is 2/3 -2/3 -1.5 1.5

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Question 1135894: The ratio of the sum of the first three terms of a G.P to the sum of the first 6 terms is 27:19. The common ratio is
2/3
-2/3
-1.5
1.5
Answer by ikleyn(52781)   (Show Source): You can put this solution on YOUR website!
.
   +  +  +  +  +  = 


=  =  +  = .


Therefore,


 =  = .


Hence,    =    and   =  = .


It implies   r =  = .


Answer.  r = ,  which is the  first line of the option's list.


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