Answer:68 People
Step-by-step explanation: This is because if he ended up with $500 by the end of the night, this is after he paid the DJ. So we assume he paid the DJ so we add $180 to what he ended up with that night. That adds up to $680 so $680 is the amount he made that night from the people coming in. Divide that by 10 to get the amount of people, and you get 68. So 68 people came to his party.