24feet is 8 yards while 24 quarts is 6gallons why do we end up with more yards then gallons when both conversion started with 24 units

The dance committee of pine bluff middle school earns $72 from a bake sale and will earn $4 for each ticket they sell to the spring fling dance. the dance will cost $400 write an inequality to determine the number, t of tickets the committee could sell to have money left over after they pay for this year's dance. what is the solution set of the inequality?