Gloria's pontoon boat holds 24 gallons of gas.
Before they went out on the lake, Gloria decided
to fill the tank by adding 13-4 gallons of gas.
How many gallons of gas were in the tank before
Gloria filled it?
ok so if the girl added 13 gallons of gas 11 gallons were already there, if 14 gallons then 10 gallons were there, if 13,4 then 10,6 gallons were already there