Question 909296
a+b=1000,
0.02*a+0.2*b=0.038*1000
a=1000-b
0.02*(1000-b)+0.2*b=38.0
20-0.02b+0.2*b=38.0
0.18*b=18.0
b=100.0
a=1000-b
a=900  liter at 2%
b=100  liter at 20%
check
0.02*900+0.2*100=0.038*1000
18+20=38.0
38=38.0
ok