Math, asked by misjpmus, 11 months ago

find the mean of 25 numbers,it being given that the mean of 15 of them is 18 and the mean of remaining ones is 13​

Answers

Answered by NKS369
5

Step-by-step explanation:

Sum of 15 numbers/15=18; Sum of 15 numbers = 18×15=270; Sum of 10 numbers/10= 13; Sum of 10 numbers= 13×10=130; Mean= Sum of 25 observations/25=130+270/25=400/25=16

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