What is x when 91 divided by x equals 80?

To find the answer, just divide the dividend by the quotient: 91 ÷ 80 = 1.1375

To prove this, let's compute 91 divided by 1.1375: $\frac{91}{1.1375} = 80$

How does it work?

Asking what the value of x could be when 91 divided by x gives a result of 80, is equivalent to solving the following equation:

$\frac{91}{x} = 80$

Multiply both sides by x: $\frac{91 x}{x} = 80 x$
$\frac{91 x}{x}$ is equivalent to $\frac{x}{x} \times 91$ , which simplifies to $1 \times 91$ (or just $91$ ).
Thus, the equation becomes: $91 = 80 x$
To find x, divide both sides by 80: $\frac{91}{80} = \frac{80 x}{80}$
Which gives, after simplification: $1.1375 = x$ (or $x = 1.1375$ )

So, if the dividend is 91 and the quotient is 80, the divisor is 1.1375.