The mean age of 15 pupils in a class is 14.2 years. One new pupils joined the class and the mean changed to 14.1 years. Calculate the age of

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The mean age of 15 pupils in a class is 14.2 years. One new pupils joined the class and the mean changed to 14.1 years. Calculate the age of the new pupil. Select one: A. 12.6 years B. 13.2 years C. 14.1 years D. 12.4 years

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Ruby 1 week 2021-10-04T14:21:18+00:00 1 Answer 0 views 0

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    2021-10-04T14:22:26+00:00

    Step-by-step explanation:

    One year I had three kids in three different schools, and it was the most … rate or average number of years on staff? v What is the average class size? … Stuart, 10, is a rising fifth-grader who is also an A/B student.

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14:4+1-6*5-7*14:3+5 = ? ( )