What is x when 80 divided by x equals 31?

To find the answer, just divide the dividend by the quotient: 80 ÷ 31 = 2.5806451612903

To prove this, let's compute 80 divided by 2.5806451612903: $\frac{80}{2.5806451612903} = 31$

How does it work?

Asking what the value of x could be when 80 divided by x gives a result of 31, is equivalent to solving the following equation:

$\frac{80}{x} = 31$

Multiply both sides by x: $\frac{80 x}{x} = 31 x$
$\frac{80 x}{x}$ is equivalent to $\frac{x}{x} \times 80$ , which simplifies to $1 \times 80$ (or just $80$ ).
Thus, the equation becomes: $80 = 31 x$
To find x, divide both sides by 31: $\frac{80}{31} = \frac{31 x}{31}$
Which gives, after simplification: $2.5806451612903 = x$ (or $x = 2.5806451612903$ )

So, if the dividend is 80 and the quotient is 31, the divisor is 2.5806451612903.