Question

Sum of three consecutive numbers is 39. Find the numbers.

• A. 10, 11, 12
• B. 12, 13, 14
• C. 13, 14, 15
• D. 11, 12, 13

Answer 1

The correct option is B

12, 13, 14

Let the smallest number be '$x$'
So, the other two numbers are $x+1$ and $x+2$.
$x+(x+1)+(x+2)=39\Rightarrow 3x+3=39\Rightarrow 3x=39-3\Rightarrow 3x=36\Rightarrow x=\frac{36}{3}\Rightarrow x=12$

Thus, the numbers are 12, 12+1, and 12+2
which is 12, 13 and 14.