Question

What is the number whose $45\%$is $270?$

Answer 1

Let the number be $x$

According to question,

$45\%$of $x=270$

$$\begin{gathered} \Rightarrow 45\times \frac{1}{100}\times x=270 \\ \Rightarrow \frac{9x}{20}=270 \\ \Rightarrow 9x=270\times 20 \\ \Rightarrow x=\frac{270\times 20}{9} \\ \Rightarrow x=30\times 20=600 \end{gathered}$$

Hence, the number is $600$.