Question

If the mean of x+2, 2x+3, 3x+4 and 4x+5 is x+2, then the value of x is

Answer 1

Answer:

-1

Step-by-step explanation:

Mean = sum of observations / total number of observations

⇒ x+2 = (x+2+2x+3+3x+4+4x+5) / 4

⇒4(x+2) = 10x + 14

⇒4x + 8 = 10x + 14

⇒6x = -6

∴ x = -1