Question

The average of four consecutive even numbers is $15$. The $2$nd highest number is

• A. $12$
• B. $18$
• C. $14$
• D. $16$

Answer 1

The correct option is D $16$

Let the numbers be $x-2,x,x+2,x+4$

According to the question,

$\frac{x-2+x+x+2+x+4}{4}=15$

$4x+4=60$

$4x=56$ $\Rightarrow x=14$

Hence, the second highest number i.e. $x+2=14+2=16$