Math, asked by susmagangid1612, 1 year ago

the mean score of 25 observations is 80 and the mean score of another 55 observations is 60 determine the main source of the whole set of observation

Answers

Answered by sourav01298
80
Ans is in img above
Hope it helps
Hv a nyc day
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susmagangid1612: :( answer is 66.25
Answered by sheela15
98
here is your correct answer
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