Final answer:
The sum of 90 minutes and 85 minutes is 2 hours and 55 minutes.
Step-by-step explanation:
To find the sum of 90 minutes and 85 minutes, we add the like units first. Start with the minutes: 90 + 85 = 175 minutes. Since 60 minutes is equal to 1 hour, we can simplify the answer by converting it to hours and minutes. 175 minutes is equal to 2 hours and 55 minutes.