A class decides to all chip in to buy a sympathy gift for one of their classmates who has fallen on hard times. There are 25 students contributing to the gift, on average $8 each. The professor decides to chip in so that they can buy a $250 gift card--how much money does the professor need to add to the students' sum? [ Select ] Another class finds out about this idea and decides to do the same thing--after that class and its professor add their contribution, the final total is enough to buy a $350 gift card, and the average contribution (counting everyone from both classes!) was $7. How many people were in the second class, including the professor? [ Select ]