Question

What number and 12 have an average of 27?

Answer 1

Answer:

$\boxed{Number \: that \: give \: average \: of \: 27 \: with \: 12 \: is \: 42}$

Step-by-step explanation:

Let the number be 'x'

$= > \frac{x + 12}{2} = 27 \\ \\ = > x + 12 = 27 \times 2 \\ \\ = > x + 12 = 54 \\ \\ = > x = 54 - 12 \\ \\ = > x = 42$