Question 429179
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Hi
3x + 4y = 4
2x + y = 6 

 3x + 4y = 4
-8x -4y = -24
   -5x = -20
     x = 4 and y = -2  (y = 6-2*4)

2x - 3y = 13
5x + 2y = 4 

2x    - 3y = 13
15/2x + 3y = 12/2   |mulitplying 2nd EQ thru by 3/2
 9.5x = 19
    x = 2  and y = -3   (y = -5/2x + 2)    |10-6 = 4

3) $6 profit per bag  $12000/$6 = 2000bags


4) -10p + 200  = 15p - 50 
      250 = 25p
       $10 = p