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The real numbers x,y  and z satisfy the equations x+2y+3z=950 and 3x+2y+z=1450. What is the average of x, y and z?

 Sep 9, 2022
 #1
avatar+2666 
-1

Add the equations up.

 

Divide by 4. 

 

Can you find the average from here?

 Sep 9, 2022

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