Question

12. The average of the following
numbers is 21. 18, 15, X, 22, 31. Find
the value of 'x':​

Answer 1

VARIFIED ANSWER ✅✅

18+15+x+22+31/5=21

86+x/5=21

86+x=21×5

86+x=105

x=105-86

x=19

Answer 2

Step-by-step explanation:

18+15+x+22+31

---------------------- = 21

5

86+x = 21×5

86+x = 105

x= 105-86

x= 19