Final answer:
Yolanda's marathon time of 225 minutes is equivalent to 3.75 hours, after dividing the number of minutes by the 60 minutes in an hour.
Step-by-step explanation:
Yolanda finished a marathon in 225 minutes. To convert her time from minutes to hours, you need to divide the number of minutes by the number of minutes in an hour. Since there are 60 minutes in one hour, you divide 225 minutes by 60.
Converting Minutes to Hours
Time in hours = Time in minutes ÷ Minutes per hour
Time in hours = 225 minutes ÷ 60 minutes/hour
Time in hours = 3.75 hours
Therefore, Yolanda's marathon time expressed in hours is 3.75 hours.