Question

Find the mean of the following data 11,14,15,17,19,14.If x is added to the number the new mean is 14, find the value of x

Answer 1

$\huge\boxed{\texttt{\fcolorbox{Red}{aqua}{Hey Mate!!!}}}$

Mean = Sum of number/Total numbers

$= \frac{11 + 14 + 15 + 17 + 19 + 14}{6} \\ = \frac{90}{6} \\ = 15$
Now if x is added to the number then
Sum of the number = 90 + x

And it's mean is 14

Total number is 7
so
$14 = \frac{90 + x}{7} \\ 90 + x = 14 \times 7 \\ x = 98 - 90 \\ x = 8$
Hope it helps you

Answer 2

Answer:

I hope it is helpful...................