Question

45 is 50% of what number?

Explanation:

Step1: Define unknown number

Let the unknown number be $x$.

Step2: Set up percentage equation

$50\% \times x = 45$, or $\frac{50}{100}x = 45$

Step3: Simplify and solve for x

First simplify $\frac{50}{100} = 0.5$, so $0.5x = 45$. Then $x = \frac{45}{0.5}$

Answer:

90