If the mean of the following data is 21.5 find the value of K. Xi=5,15,25,35,45 and fi=6,4,3,k,2

If the mean of the following data is 21.5 find the value of K. Xi=5,15

1.	If the mean of the following data is 21.5 find the value of K. Xi=5,15,25,35,45 and fi=6,4,3,k,2
Answer» Answer =5