Question

2. The average age of 25 students is 10years

and the average age of another class
30 Students is 15 years. Find the average age
of students of the two classes​

Answer 1

12.7 years to the nearest tenth.

Explanation:

The total of the ages for the 25 students = 10*25 = 250.

For the 30 students it is 15*30 = 450.

The average for the 2 classes = (250 + 450) / (25 + 30)

= 700 / 55

= 12.7 years to the nearest tenth.