If mean of `10,15,x,20,30` is 20 then find `x`

The mean of 12, 10, x, 20 and 18, is 17. Find x

x and u are two variables with relation x= (U-15)/10 . If the mean value of u is 20, then find the mean value of x.

Arithmetic mean of these items : 10 , 15, X, 20, 30, is 20. Find out the missing item.

If the mean of 20, 18 ,13 ,12, x and 10 is 15, then find the value of x.

If the mean of 20, 18 ,13 ,12, x and 10 is 15, then find the value of x.

If the arithmetic Mean of 8 and 'x' is 20 ,then find 'x' ?

The geometric mean of 5,8,10,15,20,25,30,35 is

The geometric mean of 5,8,10,15,20,25,30,35 is

The mean of 10, 15, 19, 30, 43, 69, and x is x. Find the median of the data.