Question

Express $169$ as sum of two consecutive numbers.

Answer 1

Let the two consecutive numbers be $x$ and $x+1$.

Their sum would then be $2x+1$.

So, $2x+1=169$

$\Rightarrow 2x=168$

$\Rightarrow x=\frac{168}{2}=84$

Hence, $x+1=85$

The two numbers whose sum is $169$ are $84$ and $85$.