Question

find x if 9, x, 14, 18x, x, 8, 10, 4 have a mean of 11

Answer 1

9×11×14×18×11×11×8×10×4=solve now

Answer 2

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〰️〰️〰️〰️〰️〰️〰️⏩⤵️⤵️

$\underline\bold{To\:find\:the\:value\:of\:x}$

Mean = sum of observation/ no. of observation

=>9+14+8+10+4+x+x+18x/8 = 11

=> 23+12+10 +20x/8 = 11

=>45+20x/8 =11

=> 45+20x = 88

=>20x= 88-45

=>20x=43

=>x= 43/20

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