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3x + 2y = 25000
4x + 3y = 36000
b)
12x+8y=100000
12x+9y=108000
y=8000
x=3000
>7x+2y = 7.3000+2.8000=37000
(ii) 4x + 3y = 36000
b.. (i) 3x + 2y = 25000 * 3
(ii) 4x + 3y = 36000 * 2
(i) 9x +6y = 75000
(ii) 8x +6y= 72000
------------------------ --
x = 3000
pers (i) 3x + 2y =25000
3(3000)+ 2y = 25000
9000 + 2y = 25000
2y = 16000
y = 8000
==> 7x + 2y = 7(3000)+2(8000)
= 37000