Question

The mean of the numbers 13,16,X,18,21,2x,35 is 22. Find the value of x.

Answer 1

Answer:

X =17

Step-by-step explanation:

mean = (total sum) / total number

given, mean is 22.

Then,

mean = ( 13+16+X+18+21+2X+35)/7

22 = ( 103+3X) / 7

22 × 7 = 103+3X

154 = 103 + 3X

154-103= 3X

51 = 3X

X = 51/3

X =17

Answer 2

Answer:

17

Step-by-step explanation:

Here, n=77, *X=22

22=13+16+x+18+21+2x+35 /7

when you cross-multiply, you have

154=103+3x

So, collecting like terms

154-103=3x

51=3x

X=17