Question

40 is 50% of what number

Answer 1

If 40 represents 50%, to find which number represents 100%, we can use the next proportion

$\frac{40}{x}=\frac{50\text{ \%}}{100\text{ \%}}$

Solving for x,

$\begin{gathered} 40\cdot100=50\cdot x \\ \frac{4000}{50}=x \\ 80=x \end{gathered}$

Then, 40 is 50% of 80