A middle school took all of its 6th grade students on a field trip to see a symphony. The students filled 576 seats, which was 36% of the total number of seats in the theater. How many total seats were in the theater?

A movie theater opened at 8:00am. In the first hour, 175 people purcahsed tickets. In the second hour, 20% more people purchased tickets than in the first hour. Each admission ticket cost $8.97. What was the total amount of money paid for all the tickets in the first two rows?

John needs a computer for his summer class. The computer costs $385 dollars but he gets a 30% student discount. What is the total amount he will spend on the computer?

At the store, 24 batteries cost $15.00. At this rate, how much will 9 batteries cost?