Question

if the mean of 10,12,18,13,p,and 17 is 15. find the value of p​

Answer 1

$\frac{10 + 12 + 18 + 13 + p + 17} {6} = 15 \\ \frac{70 + p}{6} = 15 \\ 70 + p = 90 \\ p = 20$

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