Tolong jawab no 12 dengan jalan

KEMEJA = X
KAUS = Y
X/Y = 5/3
3X = 5Y

3X + 2Y = 630000
5Y + 2Y = 630000
7Y = 630000
Y = 90000

3X = 5(90000)
3X = 450000
X = 150000

2X + Y = 2(150000) + 90000 = 300000+ 90000 = 390000

Semoga membantu… Jawabannya B 390.000