Final answer:
Jessica spent 8 hours and 45 minutes at the theme park, calculated by converting the times to a 24-hour format and subtracting her arrival time from her departure time, with consideration of the hours and minutes.
Step-by-step explanation:
Jessica arrived at the theme park at 10.35 am and left at 7.20 pm. To calculate the amount of time she spent at the theme park, we subtract her arrival time from her departure time. This requires converting the times into a 24-hour format if not already and ensuring the minutes are properly accounted for.
Firstly, we convert 7.20 pm to 24-hour format, which is 19:20. We cannot directly subtract 10:35 from 19:20 because the minutes in 10:35 would lead to a negative number. So we do it in two steps:
- Subtract the hours: 19 - 10 = 9 hours
- Subtract the minutes: Since we can't subtract 35 minutes from 20 minutes, we have to borrow 1 hour from the 9 hours calculated before. This gives us (60 + 20) - 35 = 45 minutes. Therefore, adding back the 8 hours left after borrowing, we get a total of 8 hours and 45 minutes.
So, Jessica spent 8 hours and 45 minutes at the theme park.