Final answer:
Dana earns $191.25 per day and Monique earns $127.50 per day.
Step-by-step explanation:
To find out how much Dana and Monique each earn in one day, we need to calculate the total amount earned by each groomer.
Dana groomed 15 dogs in 10 hours, so the amount earned by Dana is $12.75 multiplied by 15, which equals $191.25.
Monique groomed 10 dogs in 8 hours each, so the amount earned by Monique is $12.75 multiplied by 10, which equals $127.50.
Therefore, Dana earns $191.25 per day and Monique earns $127.50 per day.