Question 45161
x+y=50 & 5x+10y=350 then x=50-y & 5(50-y)+10y=350 or 250-5y+10y=350 or

5y=100 or y=20 then x=50-20 or x=30

proof 5*30+20*10=350 or 150=200=350 or 350=350