To solve this problem, we need to first find the total age of all the students, then subtract the total age of the two groups of 5 students we know about. Finally, we divide by the number of remaining students to find their average age.

1. The total age of all the students is 30 students * 12 years/student = 360 years.
2. The total age of the first group of 5 students is 5 students * 10 years/student = 50 years.
3. The total age of the second group of 5 students is 5 students * 14 years/student = 70 years.
4. Subtract the total age of the two known groups from the total age of all the students: 360 years - 50 years - 70 years = 240 years.
5. The number of remaining students is 30 students - 5 students - 5 students = 20 students.
6. The average age of the remaining students is the total age of the remaining students divided by the number of remaining students: 240 years / 20 students = 12 years.

So, the average age of the remaining students is 12 years.

Question

To solve this problem, we need to first find the total age of all the students, then subtract the total age of the two groups of 5 students we know about. Finally, we divide by the number of remaining students to find their average age.

1. The total age of all the students is 30 students * 12 years/student = 360 years.
2. The total age of the first group of 5 students is 5 students * 10 years/student = 50 years.
3. The total age of the second group of 5 students is 5 students * 14 years/student = 70 years.
4. Subtract the total age of the two known groups from the total age of all the students: 360 years - 50 years - 70 years = 240 years.
5. The number of remaining students is 30 students - 5 students - 5 students = 20 students.
6. The average age of the remaining students is the total age of the remaining students divided by the number of remaining students: 240 years / 20 students = 12 years.

So, the average age of the remaining students is 12 years.

Knowee AI · Accepted Answer

To solve this problem, we need to first find the total age of all the students, then subtract the total age of the two groups of 5 students we know about. Finally, we divide by the number of remaining students to find their average age.

1. The total age of all the students is 30 students * 12 years/student = 360 years.
2. The total age of the first group of 5 students is 5 students * 10 years/student = 50 years.
3. The total age of the second group of 5 students is 5 students * 14 years/student = 70 years.
4. Subtract the total age of the two known groups from the total age of all the students: 360 years - 50 years - 70 years = 240 years.
5. The number of remaining students is 30 students - 5 students - 5 students = 20 students.
6. The average age of the remaining students is the total age of the remaining students divided by the number of remaining students: 240 years / 20 students = 12 years.

So, the average age of the remaining students is 12 years.

The average age of 30 students of a class is 12 years. The average age of a group of 5 of the students is 10 years and that of another group of 5 of them is 14 years. What is the average age of the remaining students? Options : 8 years 10 years 12 years 14 years

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