The average of x1 x2 x3 and x4 is 16. Half the sum of x2 x3 x4 is 23. What is the value of x1?
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Hi ,
_____________________________
Average
= ( sum of the observations ) /
(number of observations )
_____________________________
According to the question ,
Observations are x1 , x2 , x3 , x4
Average = 16
( x1 + x2 + x3 + x4 )/ 4 = 16
x 1 + x2 + x3 + x4 = 64 --------( 1 )
Half the sum of x2 , x 3 , x4 = 23
1/2( x2 + x3 + x4 ) = 23
x2 + x3 + x4 = 46 --------( 2 )
Subtract ( 2 ) from ( 1 )
x1 = 18
I hope this helps you.
****
_____________________________
Average
= ( sum of the observations ) /
(number of observations )
_____________________________
According to the question ,
Observations are x1 , x2 , x3 , x4
Average = 16
( x1 + x2 + x3 + x4 )/ 4 = 16
x 1 + x2 + x3 + x4 = 64 --------( 1 )
Half the sum of x2 , x 3 , x4 = 23
1/2( x2 + x3 + x4 ) = 23
x2 + x3 + x4 = 46 --------( 2 )
Subtract ( 2 ) from ( 1 )
x1 = 18
I hope this helps you.
****
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