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Question

If the mean of the number 27+x,31+x,89+x,107+x,156+x is 82, then the mean of 130+x,126+x,68+x,50+x,1+x is


Correct Answer
A
75
Your Answer
B
157
Your Answer
C
82
Your Answer
D
80

Solution

The correct option is A 75
Given, 
82=(27+x)+(31+x)+(89+x)+(107+x)+(156+x)5
82×5=410+5x410410=5xx=0
 Required mean is,
¯¯¯x=130+x+126+x+68+x+50+x+1+x5
¯¯¯x=375+5x5=375+05=3755=75.

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