Yang jago nilai maximum tolong bantu yaa!

sorry kurang jelas .. semoga membantu
jawaban yang dikotakin

semen a = A
semen b = b

a + b = 30 | kali 52.000
52.000a + 65.000b = 1.820.000 | kali 1
__________________________
52.000a + 52.000b = 1.560.000
52.000a + 65.000b = 1.820.000 [ - ]
___________________________

-13.000b = -260.000
b = -260.000 / -13.000
b = 20

a + b = 30
a + 20 = 30
a = 30 - 20
a = 10

keuntungan maksimum =
a(untung a ) + b(untung b) =
10(8.000) + 20(10.000) =
80.000 + 200.000 =
280.000 ( B )

#semoga membantu.....