Question

If the mean of three observations x+2, x+4 and x+6 is 15, then x is equal to__

12
13
15
11

Answer 1

Answer:

11

Step-by-step explanation:

x+2 + (x+4) + (x+6) / 3 = 15

x + 2 + x + 4 + x + 6 = 45

3x + 12 = 45

3x = 33

x =11

Answer 2

Step-by-step explanation:

Here

x+2+x+4+x+6/3=15

3x+12=15×3

3x=45-12

x=33/3

x=11

so x=11

is the right answer

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