The mean of mark of 20 students are 52 and the mean of mark of 25 students are 43.what is the mean of all 45 students?

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The mean of mark of 20 students are 52 and the mean of mark of 25 students are 43.what is the mean of all 45 students?

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Kennedy 3 weeks 2021-10-08T06:00:29+00:00 1 Answer 0 views 0

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    2021-10-08T06:01:44+00:00

    Answer:

    Step-by-step explanation

    when you want to solve the mean you have to add all the variables we have in this case 20+52+25+43=140

    then divided the answer by the amount of variables

    in this case 140/4=35

    lastly add 35+45=80 students if we add all the 45 students

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