I'm completely lost with this math problem: To raise money for their class fund, each of the 30 students from one class sold lollipops that cost $0.8 per lollypop. On average, each student sold 10 lollipops. If they bought the lollipops for $0.5 each, how much money was the class able to raise from the profit of selling lollipops?
Can you give me a hand?