Final answer:
The question requires basic time calculations, including addition, subtraction, and conversion of units of time. This topic is categorized under Mathematics and is appropriate for Middle School level students. The tasks include finding sums of minutes and seconds, differences in time, and converting seconds to minutes and hours.
Step-by-step explanation:
The student's question involves basic arithmetic operations with units of time, which falls under the subject of Mathematics. The level of math required suggests that the subject matter is suitable for Middle School students. The operations include addition and subtraction of minutes and seconds, as well as conversions between seconds, minutes, and hours. Here are examples of how to do these calculations
- Add the following units of time:
- 15 minutes + 60 minutes = 75 minutes
- 10 minutes + 20 minutes = 30 minutes
- 15 seconds + 45 seconds = 60 seconds or 1 minute
- Subtract the following units of time:
- 35 minutes - 10 minutes = 25 minutes
- 60 minutes - 10 minutes = 50 minutes
- 1 hour 75 minutes - 20 minutes = 115 minutes or 1 hour 55 minutes
- 2 hour 10 minutes - 20 minutes = 1 hour 50 minutes
- 1 hour 5 seconds - 5 minutes = 55 minutes and 5 seconds (assumes subtraction of 5 minutes from the hour)
- Convert the following units and fractional units of time:
- 3000 seconds = 50 minutes
- 6000 seconds = 1.67 hours (rounded to two decimal places)
- 360 minutes = 6 hour