What is x when 25 divided by x equals 51?

To find the answer, just divide the dividend by the quotient: 25 ÷ 51 = 0.49019607843137

To prove this, let's compute 25 divided by 0.49019607843137: $\frac{25}{0.49019607843137} = 51$

How does it work?

Asking what the value of x could be when 25 divided by x gives a result of 51, is equivalent to solving the following equation:

$\frac{25}{x} = 51$

Multiply both sides by x: $\frac{25 x}{x} = 51 x$
$\frac{25 x}{x}$ is equivalent to $\frac{x}{x} \times 25$ , which simplifies to $1 \times 25$ (or just $25$ ).
Thus, the equation becomes: $25 = 51 x$
To find x, divide both sides by 51: $\frac{25}{51} = \frac{51 x}{51}$
Which gives, after simplification: $0.49019607843137 = x$ (or $x = 0.49019607843137$ )

So, if the dividend is 25 and the quotient is 51, the divisor is 0.49019607843137.