Final answer:
Sally spent 60 minutes on each manicure and 120 minutes on each hair styling session over the weekend.
Step-by-step explanation:
To determine how long each manicure and hair styling session takes for Sally on the weekend, we need to calculate the total time she spent on each type of service. Sally works from 8 am to 4 pm each day, which equals 8 hours per day, or 480 minutes in total since there are 60 minutes in an hour. On Saturday, she gave 6 manicures and styled 5 ladies' hair. On Sunday, she gave 10 manicures and styled 3 ladies' hair.
To find the average time per manicure and hair styling for both days combined, we would add up all the manicures and hair stylings done, and divide the total minutes worked by those numbers. Sally worked a total of 960 minutes (480 minutes per day times 2 days). She gave 16 manicures (6 on Saturday and 10 on Sunday) and styled 8 ladies' hair (5 on Saturday and 3 on Sunday).
The time spent per manicure is 960 minutes divided by 16 manicures, which equals 60 minutes per manicure. Similarly, the time spent on hair styling is 960 minutes divided by 8 hair styles, which equals 120 minutes (or 2 hours) per hair styling session.