If xi =4,8,12,16,20Fi=5,3,x,5,4Mean=12.Find value of ( x ).Pls tell me the answer only.

If xi =4,8,12,16,20Fi=5,3,x,5,4Mean=12.Find value of ( x ).Pls tell me

1.	If xi =4,8,12,16,20Fi=5,3,x,5,4Mean=12.Find value of ( x ).Pls tell me the answer only.
Answer» How by simple formula 13