Question

If the mean of 5 observation x x + 2 X + 3 X + 4 and X + 6 is 14 find the value of x

Answer 1

x+x+2+x+3+x+4+x+6/5=14
5x+15/5=14
5x+15=14x5
5x+15=70
5x=70-15
5x=55
x=55/5=11