Question 908463

a+b=170,
60*a+85*b=65*170
a=170-b
60*(170-b)+85*b=11050
10200-60b+85*b=11050
25*b=850
b=34
a=170-b
a=136  gal at 60%
b=34  gal at 85%
check
60*136+85*34=65*170
8160+2890=11050
11050=11050
ok