Math, asked by anki8722, 1 month ago

marks of 10 students were ar follow:25,20,26,12,20,22,15,30,25and x.If the mean of the marks is 21,The value of x is

Answers

Answered by mmuqeet637

1

Answer:

x=15

Step-by-step explanation:

mean=21

mean=sum of observation/number of observation

25+20+26+12+20+22+15+30+25+X=195

21=195+X/10
21×10=195+X
210=195+X
X=210-195
X=15

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