If 12 is the mean score of the following set of numbers:12,10,x,8,10,find the value of x.
A.12
B.15
C.20
D.40
E.60
Answer:
C.20
Step-by-step explanation:
12+10+8+10+20=60
60/5=12
(5 is the number of numbers, 12,10,8,10,20)