What is x when 28 divided by x equals 20?

To find the answer, just divide the dividend by the quotient: 28 ÷ 20 = 1.4

To prove this, let's compute 28 divided by 1.4: $\frac{28}{1.4} = 20$

How does it work?

Asking what the value of x could be when 28 divided by x gives a result of 20, is equivalent to solving the following equation:

$\frac{28}{x} = 20$

Multiply both sides by x: $\frac{28 x}{x} = 20 x$
$\frac{28 x}{x}$ is equivalent to $\frac{x}{x} \times 28$ , which simplifies to $1 \times 28$ (or just $28$ ).
Thus, the equation becomes: $28 = 20 x$
To find x, divide both sides by 20: $\frac{28}{20} = \frac{20 x}{20}$
Which gives, after simplification: $1.4 = x$ (or $x = 1.4$ )

So, if the dividend is 28 and the quotient is 20, the divisor is 1.4.