Question

45 is 130% of what number?

Answer 1

Let x be the unknown number, then we can establish the following rule of three

`\begin{gathered} 45\text{ ------- 130 \%} \\ x\text{ ------- 100 \%} \end{gathered}`

By cross-multiplying these numbers, we have

`x*\text{ (130 \%)=45}*\text{ 100\%}`

Then, x is given by

`\begin{gathered} x=\frac{\text{45}*\text{ 100\%}}{\text{130 \%}} \\ x=(4500)/(130) \\ \end{gathered}`

then, x is

`x=34.615`

Therefore, the searched number is: 34.615