Question

The average of 16, 18, 14, 15, 19, 20, 12 and x is 17. what is the value of x?​

Answer 1

The sum of the number including x =(17*8)

                                                          = 136

The sum of the numbers excluding x =(16+18+14+15+19+20+12)

                                                              = 114

So, the value of x=(136-114)

                            = 22

(Ans): 22

Answer 2

average = 16+18+14+15+19+20+12+x/8

17 =114+x/8

136= 114+x

x= 136-114

x= 22

the value of x is 22