Question

if the average of 6, 5, x, 4, 15 is 12 find x

Answer 1

=> 6 + 5 + x + 4 + 15 /5 = 12

=> 30+x /5 = 12

=> 30 + x = 60

=> x  = 60-30

=> x = 30

Hope it helps !

Answer 2

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HERE'S THE ANSWER

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♠️ We know average is sum of observation divided by number of observations

⏺️ Average = 12

=> Avg = ( 6 + 5 + x + 4 + 15 ) / n

⏺️ n is total number of observations , here n = 5

=> Avg = ( 6 + 5 + x + 4 + 15 ) / 5

=> 12 = ( 6 + 5 + x + 4 + 15 ) / 5

=> ( 6 + 5 + x + 4 + 15 ) = 12 × 5

=> ( 6 + 5 + x + 4 + 15 ) = 60

=> 30 + x = 60

=> x = 60 - 30

=> $\boxed{ x\:=\:30}$

HOPE HELPED

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