Question

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?

Answer 1

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