Question

the average of 4 numbers is 12 and the three of the numbers are 10 , 14 , 16 . find the 4th number .

Answer 1

Answer:

Step-by-step explanation:

average of 4 numbers =12

and other three numbers are 10,14,16

12=10+14+16+x  /4

48=40+x

x=8

Answer 2

Answer:

The 4th number is 8

Step-by-step explanation:

Average = sum of all numbers/ number of observation

Let the 4th number be a.

Average= 10+14+16+a/4

12x4= 40+a

48-40=a

a= 8

Hope it helps you