Question

the mean of 5 10 x 15 15 15 is 15 then value of x is

Answer 1

5+10+x+15+15+15÷6=15

60+x÷6=15

60+x=15*6

x=90-60

x=30

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Answer 2

(5+10+x+15+15+15)/6=15
or,60+x=90
or,x=30(ans)
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