If ms smith class read for 450hrs this month. Ms Brown class read two-thirds the number of hrs read by ms smith class. Ms James class read twice the hrs read by ms brown class. There are 90 students in these 3 classrooms. What was the average number of hrs read by each student?
Ms. Smith >> 450
Ms. Brown >> 2/3 * 450 = 300
Ms. James >> 2 * 300 = 600
Total pages = 1,350
1,350 / 90 = 15 average pages per student
To calculate the average number of hours read by each student, we need to divide the total number of hours read by the total number of students.
1. First, let's calculate the number of hours read by each class:
- Ms. Smith's class read for 450 hours.
- Ms. Brown's class read two-thirds the number of hours read by Ms. Smith's class.
So, Ms. Brown's class read (2/3) * 450 = 300 hours.
- Ms. James' class read twice the hours read by Ms. Brown's class.
So, Ms. James' class read 2 * 300 = 600 hours.
2. Next, let's calculate the total number of hours read by all the classes:
Total hours = Ms. Smith's class hours + Ms. Brown's class hours + Ms. James' class hours
= 450 + 300 + 600
= 1350 hours
3. Finally, let's calculate the average number of hours read by each student:
Average hours per student = Total hours / Total number of students
= 1350 hours / 90 students
= 15 hours per student
Therefore, the average number of hours read by each student is 15 hours.