Answer: 4.75hours or 4 3/4 hours.
Step-by-step explanation:
To solve this problem you must apply the proccedure shown below:
- You know that one hour has sixty minutes:
1 hour=60 minutes.
- Therefore, you must convert 45 minutes to hours, as following:
[tex](45min)(\frac{1h}{60min})=\frac{3}{4}h=0.75h[/tex]
- Add this result to 4 hours:
[tex]4h+0.75=4.75h[/tex]
- Therefore she can write this as following:
4.75hours or 4 3/4 hours.
