Question 901957
1.9*x+1.6*10=1.8(10+x)
1.9*x+16=18+1.8x
1.9x-1.8x=18-16
0.1x=2
x=20 is  amount  at chews  and 30 is amount of mix
check
1.9*20+1.6*10=1.8(10+20)
38+16=1.8(30)
54=54
ok