What is x when 55 divided by x equals 64?

To find the answer, just divide the dividend by the quotient: 55 ÷ 64 = 0.859375

To prove this, let's compute 55 divided by 0.859375: $\frac{55}{0.859375} = 64$

How does it work?

Asking what the value of x could be when 55 divided by x gives a result of 64, is equivalent to solving the following equation:

$\frac{55}{x} = 64$

Multiply both sides by x: $\frac{55 x}{x} = 64 x$
$\frac{55 x}{x}$ is equivalent to $\frac{x}{x} \times 55$ , which simplifies to $1 \times 55$ (or just $55$ ).
Thus, the equation becomes: $55 = 64 x$
To find x, divide both sides by 64: $\frac{55}{64} = \frac{64 x}{64}$
Which gives, after simplification: $0.859375 = x$ (or $x = 0.859375$ )

So, if the dividend is 55 and the quotient is 64, the divisor is 0.859375.