What is x when 91 divided by x equals 30?

To find the answer, just divide the dividend by the quotient: 91 ÷ 30 = 3.0333333333333

To prove this, let's compute 91 divided by 3.0333333333333: $\frac{91}{3.0333333333333} = 30$

How does it work?

Asking what the value of x could be when 91 divided by x gives a result of 30, is equivalent to solving the following equation:

$\frac{91}{x} = 30$

Multiply both sides by x: $\frac{91 x}{x} = 30 x$
$\frac{91 x}{x}$ is equivalent to $\frac{x}{x} \times 91$ , which simplifies to $1 \times 91$ (or just $91$ ).
Thus, the equation becomes: $91 = 30 x$
To find x, divide both sides by 30: $\frac{91}{30} = \frac{30 x}{30}$
Which gives, after simplification: $3.0333333333333 = x$ (or $x = 3.0333333333333$ )

So, if the dividend is 91 and the quotient is 30, the divisor is 3.0333333333333.