Answer :

To determine how many people in the 16-24 age group made over $10 per hour out of a workforce of 3,900,000, we would need additional information. Specifically, we would need the percentage or proportion of individuals within that age group who earn over $10 per hour.

Do you have any additional information or data that can help us calculate the number of individuals in the 16-24 age group who make over $10 per hour?