Question 1100866
x+y=36000,
12*x+6*y=258000
x=36000-y
12*(36000-y)+6*y=258000
432000-12y+6*y=258000
-6*y=-174000
y=29000
x=36000-y
x=7000 at 12 and  y=29000 at 6
check
7000+29000=36000
12*x+6*y=258000
12*7000+6*29000=258000
84000+174000=258000
258000=258000
ok
codetick
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