Answer:
[tex]\text{Average rate}=\frac{\text{40 laps}}{\text{ hour}}[/tex]
Step-by-step explanation:
Please consider the complete question.
Sebastian swan laps every day in the community swimming pool. He swam 45 minutes each day, 5 days each week, for 12 weeks. In that time, he swam 1800 laps. What was his average rate in laps per hour?
Let us convert time taken into hours as:
[tex]\text{Days}=5\times 12=60[/tex]
[tex]\text{Minutes}=60\times 45[/tex]
1 hour = 60 minutes. To convert minutes into hours, we will divide total minutes by 60.
[tex]\text{Hours}=\frac{60\times 45}{60}=45[/tex]
Now, we will divide 1800 by 45 to find average rate in laps per hour as:
[tex]\text{Average rate}=\frac{\text{1800 laps}}{\text{45 hours}}[/tex]
[tex]\text{Average rate}=\frac{\text{40 laps}}{\text{ hour}}[/tex]
Therefore, Sebastian's average rate is 40 laps per hour.