Question 252839
36-11.2=24.8 not used and still in tanks
x+y=36
the amount in each tank is based on 36 not 11.2
the two amounts used add up to 11.2
.25*(x)+.375*(y)=11.2
x=18.4
y=36-18.4=17.6
the tanks held 18.4 and 17.6 gallons
check
.25*18.4+.375*17.6=11.2
amounts used
4.6 gal.+6.6 gals =11.2 gals
ok