Question

The mean observation x,x+3,2x+1,5x-4 and 3x+7 is 11.Find the value of x

Answer 1

mean=(sum of observation)/no of observation

(x+x+3+2x+1+5x-4+3x+7)/5=11

x+x+3+2x+1+5x-4+3x+7=55

12x+7=55

12x=55-7

12x=48

x=4

Answer 2

solution present in photo .step by step your question