Question

the mean of x, x + 3, x + 6 ,x + 9 ,x + 12 and x + 15 is 18 find the x also the median

Answer 1

x+x+3+x+6+x+9+x+12+x+15/6=18. 108=6x+45 6x=63. x=31/2. x=15.5. x+6=21.5 x+9=24.5 median=21.5+24.5/2=46/2=23