##
The average age of a class of 20 students

is 15 years. When they are mixed with

another section havin@o students, the

Question

The average age of a class of 20 students

is 15 years. When they are mixed with

another section havinCaroline students, the

average age of the class becomes 14

years. What is the average age of the 10

students of the second section?

in progress
0

Mathematics
5 months
2021-07-08T02:33:23+00:00
2021-07-08T02:33:23+00:00 1 Answers
0 views
0
## Answers ( )

Answer:12

Step-by-step explanation:20( number of students)×15(average age of the 20 students) =300( Total age of 20 students)

The second section has 10 students.

so,

20+10= 30( Number of students) × 14( average age of the 30 students)= 420(Total age of 30 students)

now the difference between the Total age is 420-300=120

The Total age of 10 students are 120.

Now the average is 120/10= 12