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?​

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Kaylee 5 months 2021-07-08T02:33:23+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-07-08T02:34:30+00:00

    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

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