Question

The mean of 12,13,15,18,x,28is18.find the value of x

Answer 1

Answer:

32

Step-by-step explanation:

mean = sum of all the obs.÷total no. of obs

18 = 12+13+15+18+x+28÷6

18×6= 76+x

108-76=x

x=32

Answer 2

Answer:

x = 22

Step-by-step explanation:

12 + 13 + 15 + 18 + x + 28

-----------------------------------  = 18

                 6

86 + x = 18 × 6

86 + x = 108

x = 108 - 86

∴ x = 22