Question

The arithmetic mean of X , X+3 ,X+6 , X+9 and X+12 is 10 than find x.

Answer 1

Answer:

4

Step-by-step explanation:

arithmetic mean of X, X+3, X+6, X+9, X+12 is X+6

X+6 = 10

X = 4

Answer 2

ANSWER

By definition,

Average=

5

x+(x+3)+(x+6)+(x+9)+(x+12)

=

5

5x+30

=x+6