One side of the triangle is half the longest side. the third side is 10 meters less than the longest side. the perimeter is 45 meters. find all three sides

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?